Laboratory of Spectroscopy

Synthesis of rare-earth doped fluoride and oxyfluoride glass ceramics and nanocomposites.

Spectroscopic properties of rare-earth activated bulk materiāls are extensively studied many years.Based on these studies novel lasers, colour displays, light emiters and etc. are developed. Nanocomposites possess many intriguing properties which are not present in corresponding bulk materials. Therefore nanocomposites can be used in the fields, where the application of bulk materials is impossible, for example, in bionanotechnology, in nanophotonic, etc.In our laboratory the synthesis of nanoparticles is adopt and modified for the synthesis of rare-earth (RE) activated NaREF₄ and BaREF₄ nanocomposites. In addition it is working on a synthesis of new transparent oxyfluoride glass ceramics.

Studies of radiation energy transfer and relaxation mechanisms in doped nanocomposites by means of optical spectroscopy methods.

One of possible application of nanostructures is related with optical properties including luminescence of nanoparticles. In our lab photoluminescence spectra and kinetics of rare-earth activated complex fluoride nanostructures are studied in wide spectral and temperature range. Exciting radiation energy transfer and relaxation processes resulting in photoluminescence are studied. Much attention is paid for studies of upconversion processes in rare-earth doped nanofluorides which involve the absorption of multiple photons (usually IR) and subsequent emission of one single photon (VIS or UV).

Wide band gap materials

Research works by the Laboratory are focused on light-induced processes and defect luminescence in wide band gap solid state materials, such as III group nitrides, oxides and other materials available in the form of bulk and nanosize structures, in order to detect:

• spectral characterization of materials containing absorption, photoluminescence and its excitation spectra ensuring spectral pasport of material;
• defect-induced luminescence mechanisms, structure of luminescent defects and their behavior in materials;
• processes of energy transfer between defects and host lattice;
• influence of material size on luminescence properties (macrosize and nano-structures in 1D, 2D and 3D forms);
• estimation of practical applications of materials for UV light dosimeters, gas sensors, UV and visible light emitters;
• development of new materials for white light emitters with specific properties.

Research includes different spectral characterizations of materials in temperature range between 8 K and 300 K such as absorption/transmission spectra within the spectral range between 190 nm and 1100 nm, photoluminescence spectra (between 250 nm and 1500 nm) and its excitation spectra as well as optically and thermally stimulated luminescence and luminescence polarization measurements.

• Magnetic resonance spectroscopy (EPR, ODMR);

• Research of defect structure and luminescence mechanisms in fluoride, oxide crystals, oxyfluoride composites, and application of the materials.

Active projects:

European Regional Development Fund

Development of sustainable recycling technology of electronic scrap for precious and non-ferrous metals extraction (es-retech) (2021-2023)

Novel materials for development of all-optical temperature sensor (OPTSEN) (2020-2023)

Horizon 2020 - EUROfusion

WP PWIE (Plasma-Wall Interaction and Exhaust) SP X2: Optimization of laser-based surface analysis diagnostics (2021-2025)

Latvian Council of Science

Non-destructive investigations of interfaces of multilayer organic materials for high-performance OLED developmen (2023-2025)

Defect engineering of novel UV-C persistent phosphor materials (2022-2024)

Postdoctoral

Growth and characterization of Ga2O3 and ZnMgO thin films for solar-blind ultraviolet applications (2020-2023)

Novel glasses and glass ceramics with different combinations of garnets doped with rare earth and 3d metal ions for temperature-resistant phosphors in high-power white LEDs – NOGACE (2020-2023)

Accomplished projects:

Baltic-German University Liaison Office Projects

Cooperation for development of luminescent oxyfluoride glass ceramics for white LEDs (2015)

Competence Centers

Investigation of the coating process parameters to provide high-quality lithium coatings and creation of lithium coating material prototype (2018)

COST

Mechanochemistry for Sustainable Industry (2019-2023)

Fast advanced Scintillator Timing (FAST) (2014-2018)

EraNet

ZnMgO materials with tunable band gap for solar-blind UV sensors Implementation period (2019-2022)

European Regional Development Fund

Development of efficient clad-pumped fiber optical amplifiers for telecommunication systems (DOPAnT) (2019-2022)

New luminescent materials for gas sensors and radiation convertors (2014-2015)

New Luminescent Materials for Energy Saving Light Sources (2010-2013)

European Regional Development Fund (LIAA administrated)

Inrared visualizer (2020)

European Social Fund

Experimental and theoretical investigation of technologically important materials (2013-2015)

Horizon 2020

The influence of the cell membrane asymmetry and curvature on the functioning of membrane proteins and the transport of therapeutic compounds (2016-2019)

ISSP UL project competition for students and young scientists

New materials for infrared light visualization (2016)

Latvia - France Program “OSMOZE”

Radiation induced processes in nitrides and other wide-gap materials (2003-2005)

Latvia – Lithuania-Taiwan Trilateral Scientific Cooperation Program

Nonpolar ZnO thin films: growth-related structural and optical properties (2014)

One-Dimensional Nanostructures of Ternary AlGaN and Metal Doped- Zinc Oxide with Tunable Bandgaps: Growth, Characterization and Optical Properties (2011-2013)

Latvian Council of Science​​​​​​​

Novel persistent luminescent material – red light emitter (2020-2022)

Up-conversion luminescence photolithography in organic compounds using nanoparticles/photoresist composition (2020-2022)

Novel transparent nanocomposite oxyfluoride materials for optical applications (2018-2021)

Research of luminescence mechanisms and dosimeter properties in prospective nitrides and oxides using TL and OSL methods (2018-2021)

Spectroscopic studies of advanced dielectrics and wide-gap semiconductors with different local disorder (2013-2016)

Latvian-Belarusian cooperation programs in science and technology

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Latvijas – Ukrainas divpusējās sadarbības programmas zinātnes un tehnoloģiju jomā

Fabrication, characterization and computer modelling of the nanostructured YAlO3:Mn ceramics for novel radiation dosimeters (2016-2018)

National Research Program

MultIfunctional Materials and composItes, photonicS and nanotechnology (IMIS2) (2014-2018)

Development of novel multifunctional materials, signal processing and information technologies for competitive knowledge-based products (2010-2013)

National Research Program of Latvia in Materialsciences (2010-2013)

For the firsts time transparent erbium doped oxyfluoride glassceramics containing only hexagonal NaYF₄ nanocrystals has been prepared by melt-quenching and subsequent heat treatment of the precursor glass. Excitation energy relaxation peculiarities of the green and red luminescence creation in Er³⁺ activated oxyfluoride ceramics with hexagonal NaYF₄ nanocrystalls are investigated. Novel Er³⁺ doped transparent glass ceramics containing hexagonal Na(Gd,Lu)F₄ nanocrystals were prepared from oxyfluoride glasses. A strong deviation of rare earth ion content in fluoride nanocrystals in comparison to the base glass has been observed. Preferential incorporation of Gd³⁺ over Lu³⁺ ions in the fluoride lattice leads to the stabilization of hexagonal Na(Gd,Lu)F₄ structure. A considerable enhancement of upconversion luminescence correlates with the formation of hexagonal solid solutions and is attributed to an efficient energy transfer between Er³+ ions.

Latvia :

• R. Cimdins Riga Biomaterials Innovations and Development of Riga Technical University (Dr.L.Berzina-Cimdiņa, Dr. J. Locs).

• Riga Technical University Institute of Inorganic Chemistry (Dr. J. Grabis).

• Riga Technical University Faculty of material science and applied chemistry (prof. A. Medvids).

• Institute of Technical Physics, Riga Technical University (Profs. A.Medvid, M.Knite)

Russia:

• Institute of Spectroscopy, Russian Academy of Sciences (prof. M. Popova).

Switzerland:

• University of bern department of chemistry and biochemistry (Dr. Karl Kramer).

Germany:

• South Westphalia University of Applied Sciences, Soest (Prof. Dr. habil. phys. S. Schweizer);

• University of Paderborn (Prof. Emeritus, J.-M. Spaeth, Dr. habil. phys. S. Schweizer, Dr. habil. phys. S. Greulich-Weber).

Romania:

• National Institute of Materials Physics (NIMP), Bucharest-Magurele, Romania (Dr. M. Secu).

Ukraine:

• Lviv Polytechnic National University, Lviv (Dr. D. Sugak, Dr. Ya. Zhydashevskyy).

• Institute of Physics of National Academy of Science of Ucraine, Kyiv (Drs. G. Dovbeshko, S. Yesylevskyy).

• Materials Research Center, National Academy of Science of Ucraine, Kyiv (Prof. O.Gogotsi)

Lithuania:

• Institute of Applied Research, Department of Semiconductor Optoelectronics, Vilnius University (Dr. Patrik Scajev)

• Optoelectronics department, Center for Physical Sciences and Technology (Dr. Ramunas Nedzinskas)

Taiwan:

• National Taiwan University, Taipei (Profs. Li-Chyong Chen, Kuei-Hsien Chen)

• Department of Materials and Optoelectronic Science, National Sun Yat-Sen University, Kaohsiung (Prof. Mitch M.C. Chou, Liuwen Chang)

France:

• Universite de Franche-Comte, Besancon (Prof. C.Ramseyer, Dr. S. Foley)

Estonia

• Tartu University, Tartu (Prof. A.Freiberg).

2022

Radzhabov, E., Shendrik, R., Pankratov, V., Emission of Tm2+ in alkaline-earth fluoride crystals (2022) Journal of Luminescence, 252. DOI: 10.1016/j.jlumin.2022.119271

Griesiute, D., Garskaite, E., Antuzevics, A., Klimavicius, V., Balevicius, V., Zarkov, A., Katelnikovas, A., Sandberg, D., Kareiva, A., Synthesis, structural and luminescent properties of Mn-doped calcium pyrophosphate (Ca2P2O7) polymorphs (2022) Scientific Reports, 12. DOI: 10.1038/s41598-022-11337-y

Krieke, G., Doke, G., Antuzevics, A., Pudza, I., Kuzmin, A., Welter, E., Tuneable persistent luminescence of novel Mg3Y2Ge3O12 garnet (2022) Journal of Alloys and Compounds, 922. DOI: 10.1016/j.jallcom.2022.166312

Ganeev, R.A., Kim, V.V., Shuklov, I.A., Popov, V.S., Lavrentyev, N.A., Ponomarenko, V.P., Mardini, A.A., Dyomkin, D.V., Milenkovič, T., Bundulis, A., Grube, J., Sarakovskis, A., Third harmonic generation in the thin films containing quantum dots and exfoliated nanoparticles (2022) Applied Physics B: Lasers and Optics, 128. DOI: 10.1007/s00340-022-07923-7

Doke, G., Antuzevics, A., Krieke, G., Kalnina, A., Sarakovskis, A., Novel broadband near-infrared emitting long afterglow phosphor MgGeO3: Cr3+ (2022) Journal of Alloys and Compounds, 918. DOI: 10.1016/j.jallcom.2022.165768

Lin, Y.-P., Piskunov, S., Trinkler, L., Chou, M.M.-C., Chang, L., Influence of Stress on Electronic and Optical Properties of Rocksalt and Wurtzite MgO–ZnO Nanocomposites with Varying Concentrations of Magnesium and Zinc (2022) Nanomaterials, 12. DOI: 10.3390/nano12193408

Trinkler, L., Pankratov, V., Trukhin, A., Berzina, B., Chou, M.M.C., Chang, L., Anisotropic photoluminescence of β-LiGaO2 crystal (2022) Optical Materials, 132. DOI: 10.1016/j.optmat.2022.112856

Mironova – Ulmane, N., Brik, M.G., Grube, J., Krieke, G., M.Kemere, Antuzevics, A., Gabrusenoks, E., Skvortsova, V., Elsts, E., Sarakovskis, A., Piasecki, M., Popov, A.I., EPR, optical and thermometric studies of Cr3+ ions in the α-Al2O3 synthetic single crystal (2022) Optical Materials, 132. DOI: 10.1016/j.optmat.2022.112859

Doke, G., Kalnina, A., Cipa, J., Springis, M., Sarakovskis, A., Optical properties of near infrared persistent phosphor CaZnGe2O6: Cr3+, M3+ (M3+ = B3+; Al3+; Ga3+) (2022) Solid State Communications, 354. DOI: 10.1016/j.ssc.2022.114894

Talebi, P., Kistanov, A.A., Rani, E., Singh, H., Pankratov, V., Pankratova, V., King, G., Huttula, M., Cao, W., Unveiling the role of carbonate in nickel-based plasmonic core@shell hybrid nanostructure for photocatalytic water splitting (2022) Applied Energy, 322. DOI: 10.1016/j.apenergy.2022.119461

Blumbergs, E., Serga, V., Shishkin, A., Goljandin, D., Shishko, A., Zemcenkovs, V., Markus, K., Baronins, J., Pankratov, V., Selective Disintegration–Milling to Obtain Metal-Rich Particle Fractions from E-Waste (2022) Metals, 12. DOI: 10.3390/met12091468

Kim, V.V., Butikova, J., Grube, J., Sarakovskis, A., Ganeev, R.A., Plasma Dynamics Characterization for Improvement of Resonantly Enhanced Harmonics Generation in Indium and Tin Laser-Produced Plasmas (2022) Photonics, 9. DOI: 10.3390/photonics9090600

Kozlovskiy, A., Shlimas, D.I., Zdorovets, M.V., Popova, E., Elsts, E., Popov, A.I., Investigation of the Efficiency of Shielding Gamma and Electron Radiation Using Glasses Based on TeO2-WO3-Bi2O3-MoO3-SiO to Protect Electronic Circuits from the Negative Effects of Ionizing Radiation (2022) Materials, 15. DOI: 10.3390/ma15176071

Zubkins, M., Aulika, I., Strods, E., Vibornijs, V., Bikse, L., Sarakovskis, A., Chikvaidze, G., Gabrusenoks, J., Arslan, H., Purans, J., Optical properties of oxygen-containing yttrium hydride thin films during and after the deposition (2022) Vacuum, 203. DOI: 10.1016/j.vacuum.2022.111218

Trinkler, L., Aulika, I., Krieke, G., Nilova, D., Ruska, R., Butikova, J., Berzina, B., Chou, M.M.-C., Chang, L., Wen, M.-C., Yan, T., Nedzinskas, R., Characterization of wurtzite Zn1−xMgxO epilayers grown on ScAlMgO4 substrate by methods of optical spectroscopy (2022) Journal of Alloys and Compounds, 912. DOI: 10.1016/j.jallcom.2022.165178

Saršū Ns, K., Kemere, M., Karziņins, A., Kļimenkovs, I., Bē Rziņš, A., Sarakovskis, A., Rekis, T., Fine-Tuning Solid State Luminescence Properties of Organic Crystals via Solid Solution Formation: The Example of 4-Iodothioxanthone-4-Chlorothioxanthone System (2022) Crystal Growth and Design, 22, pp.4838-4844. DOI: 10.1021/acs.cgd.2c00313

Pankratova, V., Dunaeva, E.E., Voronina, I.S., Kozlova, A.P., Shendrik, R., Pankratov, V., Luminescence properties and time-resolved spectroscopy of rare-earth doped SrMoO4 single crystals (2022) Optical Materials: X, 15. DOI: 10.1016/j.omx.2022.100169

Pajuste, E., Reinholds, I., Vaivars, G., Antuzevičs, A., Avotiņa, L., Sprūģis, E., Mikko, R., Heikki, K., Meri, R.M., Kaparkalējs, R., Corrigendum to Evaluation of radiation stability of electron beam irradiated Nafion® and sulfonated poly(ether ether ketone) membranes [Polymer Degradation and Stability 200 (2022) 109970](S0141391022001537)(10.1016/j.polymdegradstab.2022.109970) (2022) Polymer Degradation and Stability, 202. DOI: 10.1016/j.polymdegradstab.2022.110008

Pankratov, V., Pankratova, V., Popov, A.I., Luminescence and Vacuum Ultraviolet Excitation Spectroscopy of Nanophosphors under Synchrotron Irradiation (2022) Physica Status Solidi (B) Basic Research, 259. DOI: 10.1002/pssb.202100475

Zakis, K., Olonkins, S., Udalcovs, A., Lukosevics, I., Prigunovs, D., Grube, J., Bikse, L., Supe, A., Ozolins, O., Spolitis, S., Bobrovs, V., Cladding-Pumped Er/Yb-Co-Doped Fiber Amplifier for Multi-Channel Operation (2022) Photonics, 9. DOI: 10.3390/photonics9070457

Glaskova-Kuzmina, T., Dejus, D., Jātnieks, J., Kruuv, P.-P., Lancere, L., Kobenko, S., Sarakovskis, A., Zolotarjovs, A., Flame-Retardant and Tensile Properties of Polyamide 12 Processed by Selective Laser Sintering (2022) Journal of Composites Science, 6. DOI: 10.3390/jcs6070185

Andzane, J., Felsharuk, A., Buks, K., Sarakovskis, A., Niherysh, K., Gabrusenoks, J., Erts, D., Synthesis and Properties of Bismuth Selenide Based Nanolaminates for Application in Thermoelectrics (2022) Advanced Materials Interfaces, 9. DOI: 10.1002/admi.202200385

Rogulis, U., Krieke, G., Antuzevics, A., Fedotovs, A., Berzins, D., Popov, A.I., Pankratov, V., Low-temperature recombination luminescence of La-doped Ca2SnO4 (2022) Optical Materials, 129. DOI: 10.1016/j.optmat.2022.112545

Antuzevics, A., Zarins, A., Ansone, A., Cipa, J., Kizane, G., Leys, J.M., Knitter, R., Thermal properties of paramagnetic radiation-induced defects in lithium orthosilicate containing breeder material (2022) Journal of Nuclear Materials, 565. DOI: 10.1016/j.jnucmat.2022.153713

Uslu, M.E., Kondrotas, R., Nedzinskas, R., Volobujeva, O., Timmo, K., Kauk-Kuusik, M., Krustok, J., Grossberg, M., Study of the optical properties of Sb2(Se1-xSx)3 (x = 0–1) solid solutions (2022) Materials Science in Semiconductor Processing, 144. DOI: 10.1016/j.mssp.2022.106571

Pajuste, E., Reinholds, I., Vaivars, G., Antuzevičs, A., Avotiņa, L., Sprūģis, E., Mikko, R., Heikki, K., Meri, R.M., Kaparkalējs, R., Evaluation of radiation stability of electron beam irradiated Nafion® and sulfonated poly(ether ether ketone) membranes (2022) Polymer Degradation and Stability, 200. DOI: 10.1016/j.polymdegradstab.2022.109970

Jõgi, I., Ristkok, J., Raud, J., Butikova, J., Mizohata, K., Paris, P., Laser induced breakdown spectroscopy for hydrogen detection in molybdenum at atmospheric pressure mixtures of argon and nitrogen (2022) Fusion Engineering and Design, 179. DOI: 10.1016/j.fusengdes.2022.113131

Kim, V.V., Bundulis, A., Grube, J., Ganeev, R.A., Variation of the sign of nonlinear refraction of carbon disulfide in the short-wavelength region (2022) Optical Materials Express, 12, pp.2053-2062. DOI: 10.1364/OME.451733

Kemere, M., Antuzevics, A., Rodionovs, P., Rogulis, U., Sarakovskis, A., Photoluminescence and electron paramagnetic resonance studies of Mn2+doped CaAl4O7 (2022) Optical Materials, 127. DOI: 10.1016/j.optmat.2022.112352

Berzina, B., Ruska, R., Cipa, J., Trinkler, L., Sarakovskis, A., Grabis, J., Steins, I., Luminescence of AlN:Eu ceramics: Properties and mechanisms (2022) Optical Materials, 127. DOI: 10.1016/j.optmat.2022.112217

Kim, V.V., Shuklov, I.A., Mardini, A.A., Bundulis, A., Zvyagin, A.I., Kholany, R., Lizunova, A.A., Grube, J., Sarakovskis, A., Ovchinnikov, O.V., Ganeev, R.A., Investigation of Nonlinear Optical Processes in Mercury Sulfide Quantum Dots (2022) Nanomaterials, 12. DOI: 10.3390/nano12081264

Erts, D., Katkevics, J., Sjomkane, M., Andzane, J., Sarakovskis, A., Smits, K., Viksna, A., Rublova, Y., Meija, R., EIS characterization of aging and humidity-related behavior of Bi2Se3 films of different morphologies (2022) Nano-Structures and Nano-Objects, 30. DOI: 10.1016/j.nanoso.2022.100847

Antuzevics, A., Krieke, G., Doke, G., Berzina, B., The origin of bright cyan persistent luminescence in Ca2SnO4:La3+ (2022) Materialia, 21. DOI: 10.1016/j.mtla.2022.101374

Kim, V.V., Bundulis, A., Popov, V.S., Lavrentyev, N.A., Lizunova, A.A., Shuklov, I.A., Ponomarenko, V.P., Grube, J., Ganeev, R.A., Third-order optical nonlinearities of exfoliated Bi2Te3 nanoparticle films in UV, visible and near-infrared ranges measured by tunable femtosecond pulses (2022) Optics Express, 30, pp.6970-6980. DOI: 10.1364/OE.449490

Kucinskis, G., Nesterova, I., Sarakovskis, A., Bikse, L., Hodakovska, J., Bajars, G., Electrochemical performance of Na2FeP2O7/C cathode for sodium-ion batteries in electrolyte with fluoroethylene carbonate additive (2022) Journal of Alloys and Compounds, 895. DOI: 10.1016/j.jallcom.2021.162656

Aulika, I., Zubkins, M., Butikova, J., Purans, J., Enhanced Reflectivity Change and Phase Shift of Polarized Light: Double Parameter Multilayer Sensor (2022) Physica Status Solidi (A) Applications and Materials Science, 219. DOI: 10.1002/pssa.202100424

Pauna, H., Tuomela, A., Aula, M., Turunen, P., Pankratov, V., Huttula, M., Fabritius, T., Toward On-Line Slag Composition Analysis: Optical Emissions from Laboratory Electric Arc (2022) Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, 53, pp.454-465. DOI: 10.1007/s11663-021-02382-5

Zubkins, M., Timoshenko, J., Gabrusenoks, J., Pudzs, K., Azens, A., Wang, Q., Purans, J., Amorphous p-Type Conducting Zn–xIr Oxide (x > 0.13) Thin Films Deposited by Reactive Magnetron Cosputtering (2022) Physica Status Solidi (B) Basic Research, 259. DOI: 10.1002/pssb.202100374

Grube, J., Up-Conversion Luminescence Processes in NaLaF4 Doped with Tm3+ and Yb3+ and Dependence on Tm3+ Concentration and Temperature (2022) Applied Spectroscopy, 76, pp.189-198. DOI: 10.1177/00037028211045424

Polyakov, B., Butanovs, E., Ogurcovs, A., Sarakovskis, A., Zubkins, M., Bikse, L., Gabrusenoks, J., Vlassov, S., Kuzmin, A., Purans, J., Unraveling the Structure and Properties of Layered and Mixed ReO3-WO3Thin Films Deposited by Reactive DC Magnetron Sputtering (2022) ACS Omega, 7, pp.1827-1837. DOI: 10.1021/acsomega.1c05085

Skruodiene, M., Juodvalkyte, R., Inkrataite, G., Pakalniskis, A., Ramanauskas, R., Sarakovskis, A., Skaudzius, R., Sol-gel assisted molten-salt synthesis of novel single phase Y3–2xCa2xTaxAl5−xO12:1%Eu garnet structure phosphors (2022) Journal of Alloys and Compounds, 890. DOI: 10.1016/j.jallcom.2021.161889

Olonkins, S., Zakis, K., Udalcovs, A., Supe, A., Ozolins, O., Grube, J., Spolitis, S., Bobrovs, V., Experimental and Simulative Analysis of Cladding-Pumped EYDFA Gain Evolution (2022) 2022 International Conference Laser Optics, ICLO 2022 - Proceedingss. DOI: 10.1109/ICLO54117.2022.9840294

Vanags, M., Kulikovskis, G., Kostjukovs, J., Jekabsons, L., Sarakovskis, A., Smits, K., Bikse, L., Šutka, A., Membrane-less amphoteric decoupled water electrolysis using WO3 and Ni(OH)2 auxiliary electrodes (2022) Energy and Environmental Science. DOI: 10.1039/d1ee03982b

Pejchal, J., Babin, V., Buryi, M., Laguta, V., Hájek, F., Páterek, J., Procházková-Prouzová, L., Havlák, L., Czerneková, V., Vaněček, V., Doležal, V., Havlíček, J., Rubešová, K., Zemenová, P., Falvey, A., Král, R., Pankratov, V., Chernenko, K., Untangling the controversy on Ce3+luminescence in LaAlO3crystals (2022) Materials Advances. DOI: 10.1039/d1ma01083b

Kucinskis, G., Kruze, B., Korde, P., Sarakovskis, A., Viksna, A., Hodakovska, J., Bajars, G., Enhanced Electrochemical Properties of Na0.67MnO2 Cathode for Na-Ion Batteries Prepared with Novel Tetrabutylammonium Alginate Binder (2022) Batteries, 8. DOI: 10.3390/batteries8010006

Garmysheva, T., Nepomnyashchikh, A.I., Shalaev, A., Kaneva, E., Paklin, A., Chernenko, K., Kozlova, A.P., Pankratov, V., Shendrik, R., Luminescence of ODC(II) in quartz and cristobalite glasses (2022) Journal of Non-Crystalline Solids, 575. DOI: 10.1016/j.jnoncrysol.2021.121199

Bocharov, D., Chesnokov, A., Chikvaidze, G., Gabrusenoks, J., Ignatans, R., Kalendarev, R., Krack, M., Kundzins, K., Kuzmin, A., Mironova-Ulmane, N., Pudza, I., Puust, L., Sildos, I., Vasil'chenko, E., Zubkins, M., Purans, J., A comprehensive study of structure and properties of nanocrystalline zinc peroxide (2022) Journal of Physics and Chemistry of Solids, 160. DOI: 10.1016/j.jpcs.2021.110318

2021

Zhydachevskyy, Y., Hizhnyi, Y., Nedilko, S.G., Kudryavtseva, I., Pankratov, V., Stasiv, V., Vasylechko, L., Sugak, D., Lushchik, A., Berkowski, M., Suchocki, A., Klyui, N., Band Gap Engineering and Trap Depths of Intrinsic Point Defects in RAlO3(R = Y, La, Gd, Yb, Lu) Perovskites (2021) Journal of Physical Chemistry C, 125, pp.26698-26710. DOI: 10.1021/acs.jpcc.1c06573

Bundulis, A., Shuklov, I.A., Kim, V.V., Mardini, A.A., Grube, J., Alnis, J., Lizunova, A.A., Razumov, V.F., Ganeev, R.A., Nonlinear absorption and refraction of picosecond and femtosecond pulses in HgTe quantum dot films (2021) Nanomaterials, 11. DOI: 10.3390/nano11123351

Usseinov, A., Koishybayeva, Z., Platonenko, A., Pankratov, V., Suchikova, Y., Akilbekov, A., Zdorovets, M., Purans, J., Popov, A.I., Vacancy defects in Ga2O3: First-principles calculations of electronic structure (2021) Materials, 14. DOI: 10.3390/ma14237384

Van Der Meiden, H.J., Almaviva, S., Butikova, J., Dwivedi, V., Gasior, P., Gromelski, W., Hakola, A., Jiang, X., J gi, I., Karhunen, J., Kubkowska, M., Laan, M., Maddaluno, G., Marín-Roldán, A., Paris, P., Piip, K., Pisarčík, M., Sergienko, G., Veis, M., Veis, P., Brezinsek, S., Monitoring of tritium and impurities in the first wall of fusion devices using a LIBS based diagnostic (2021) Nuclear Fusion, 61. DOI: 10.1088/1741-4326/ac31d6

Bundulis, A., Kim, V.V., Grube, J., Ganeev, R.A., Nonlinear refraction and absorption of spectrally tuneable picosecond pulses in carbon disulfide (2021) Optical Materials, 122. DOI: 10.1016/j.optmat.2021.111778

Trinkler, L., Trukhin, A., Cipa, J., Berzina, B., UV light induced processes in pure and doped AlN ceramics (2021) Optical Materials, 121. DOI: 10.1016/j.optmat.2021.111550

Mironova-Ulmane, N., Brik, M.G., Grube, J., Krieke, G., Antuzevics, A., Skvortsova, V., Kemere, M., Elsts, E., Sarakovskis, A., Piasecki, M., Popov, A.I., Spectroscopic studies of Cr3+ ions in natural single crystal of magnesium aluminate spinel MgAl2O4 (2021) Optical Materials, 121. DOI: 10.1016/j.optmat.2021.111496

Akopdzhanyan, T.G., Kondakov, A.A., Rupasov, S.I., Kozlova, A.P., Pankratov, V., Optical properties of powder and ceramics of aluminium oxynitride obtained by self-propagating high-temperature synthesis [Savaime sklindančios aukštatemperatūrinės sintezės būdu gautų aliuminio oksinitrido miltelių ir jų keramikų optinės savybės] (2021) Lithuanian Journal of Physics, 61, pp.169-176. DOI: 10.3952/physics.v61i3.4516

Bikse, L., Dunce, M., Birks, E., Kundzins, K., Freimanis, O., Livins, M., Gabrusenoks, J., Sternberg, A., Impact of thermal treatment on the surface of na0.5bi0.5tio3-based ceramics (2021) Crystals, 11. DOI: 10.3390/cryst11101266

Piskunov, S., Gopejenko, A., Pankratov, V., Isakoviča, I., Ma, C.-G., Brik, M.G., Piasecki, M., Popov, A.I., First principles calculations of atomic and electronic structure of ti3+ al-and ti2+ al-doped yalo3 (2021) Materials, 14. DOI: 10.3390/ma14195589

Norkus, M., Skruodienė, M., Niaura, G., Šarakovskis, A., Skaudžius, R., New low-temperature phosphate glasses as a host for Europium Ions (2021) Journal of Non-Crystalline Solids, 569. DOI: 10.1016/j.jnoncrysol.2021.120966

Inkrataite, G., Kemere, M., Sarakovskis, A., Skaudzius, R., Influence of boron on the essential properties for new generation scintillators (2021) Journal of Alloys and Compounds, 875. DOI: 10.1016/j.jallcom.2021.160002

Chernenk, K., Kivimäki, A., Pärna, R., Wang, W., Sankari, R., Leandersson, M., Tarawneh, H., Pankratov, V., Kook, M., Kukk, E., Reisberg, L., Urpelainen, S., Käämbre, T., Siewert, F., Gwalt, G., Sokolov, A., Lemke, S., Alimov, S., Knedel, J., Kutz, O., Seliger, T., Valden, M., Hirsimäki, M., Kirm, M., Huttula, M., Performance and characterization of the FinEstBeAMS beamline at the MAX IV Laboratory (2021) Journal of Synchrotron Radiation, 28, pp.1620-1630. DOI: 10.1107/S1600577521006032

Krieke, G., Antuzevics, A., Berzina, B., Defect formation in photochromic Ca2SnO4: Al3+ (2021) Materials Today Communications, 28. DOI: 10.1016/j.mtcomm.2021.102592

Khanin, V., Venevtsev, I., Chernenko, K., Pankratov, V., Klementiev, K., van Swieten, T., van Bunningen, A.J., Vrubel, I., Shendrik, R., Ronda, C., Rodnyi, P., Meijerink, A., Exciton interaction with Ce3+ and Ce4+ ions in (LuGd)3(Ga,Al)5O12 ceramics (2021) Journal of Luminescence, 237. DOI: 10.1016/j.jlumin.2021.118150

Murzakhanov, F.F., Grishin, P.O., Goldberg, M.A., Yavkin, B.V., Mamin, G.V., Orlinskii, S.B., Fedotov, A.Yu., Petrakova, N.V., Antuzevics, A., Gafurov, M.R., Komlev, V.S., Radiation-induced stable radicals in calcium phosphates: Results of multifrequency epr, ednmr, eseem, and endor studies (2021) Applied Sciences (Switzerland), 11. DOI: 10.3390/app11167727

Fu, Y., Yager, T., Chikvaidze, G., Iyer, S., Wang, Q., Time-resolved FDTD and experimental FTIR study of gold micropatch arrays for wavelength-selective mid-infrared optical coupling (2021) Sensors, 21. DOI: 10.3390/s21155203

Griesiute, D., Sinusaite, L., Kizalaite, A., Antuzevics, A., Mazeika, K., Baltrunas, D., Goto, T., Sekino, T., Kareiva, A., Zarkov, A., The influence of Fe3+doping on thermally induced crystallization and phase evolution of amorphous calcium phosphate (2021) CrystEngComm, 23, pp.4627-4637. DOI: 10.1039/d1ce00371b

Šutka, A., Zubkins, M., Linarts, A., Lapčinskis, L., Ma̅lnieks, K., Verners, O., Sarakovskis, A., Grzibovskis, R., Gabrusenoks, J., Strods, E., Smits, K., Vibornijs, V., Bikse, L., Purans, J., Tribovoltaic Device Based on the W/WO3Schottky Junction Operating through Hot Carrier Extraction (2021) Journal of Physical Chemistry C, 125, pp.14212-14220. DOI: 10.1021/acs.jpcc.1c04312

Antuzevics, A., Krieke, G., Ozols, H., Fedotovs, A., Sarakovskis, A., Kuzmin, A., Oxidation state and local structure of chromium ions in laocl (2021) Materials, 14. DOI: 10.3390/ma14133539

Serga, V., Burve, R., Krumina, A., Pankratova, V., Popov, A.I., Pankratov, V., Study of phase composition, photocatalytic activity, and photoluminescence of TiO2 with Eu additive produced by the extraction-pyrolytic method (2021) Journal of Materials Research and Technology, 13, pp.2350-2360. DOI: 10.1016/j.jmrt.2021.06.029

Doke, G., Antuzevics, A., Krieke, G., Kalnina, A., Springis, M., Sarakovskis, A., UV and X-ray excited red persistent luminescence in Mn2+ doped MgGeO3 material synthesized in air and reducing atmosphere (2021) Journal of Luminescence, 234. DOI: 10.1016/j.jlumin.2021.117995

Zhang, B., Clausi, M., Heck, B., Laurenzi, S., Santonicola, M.G., Kleperis, J., Antuzevičs, A., Reiter, G., Aleshin, A.N., Lobach, A.S., Changes in Surface Free Energy and Surface Conductivity of Carbon Nanotube/Polyimide Nanocomposite Films Induced by UV Irradiation (2021) ACS Applied Materials and Interfaces, 13, pp.24218-24227. DOI: 10.1021/acsami.1c02654

Krustok, J., Kondrotas, R., Nedzinskas, R., Timmo, K., Kaupmees, R., Mikli, V., Grossberg, M., Identification of Excitons and Biexcitons in Sb2Se3 under High Photoluminescence Excitation Density (2021) Advanced Optical Materials, 9. DOI: 10.1002/adom.202100107

Usseinov, A., Koishybayeva, Z., Platonenko, A., Akilbekov, A., Purans, J., Pankratov, V., Suchikova, Y., Popov, A.I., Ab-Initio Calculations of Oxygen Vacancy in Ga2O3Crystals (2021) Latvian Journal of Physics and Technical Sciences, 58, pp.3-10. DOI: 10.2478/lpts-2021-0007

Krieke, G., Antuzevics, A., Smits, K., Millers, D., Enhancement of persistent luminescence in Ca2SnO4: Sm3+ (2021) Optical Materials, 113. DOI: 10.1016/j.optmat.2021.110842

Andzane, J., Felsharuk, A., Sarakovskis, A., Malinovskis, U., Kauranens, E., Bechelany, M., Niherysh, K.A., Komissarov, I.V., Erts, D., Thickness-dependent properties of ultrathin bismuth and antimony chalcogenide films formed by physical vapor deposition and their application in thermoelectric generators (2021) Materials Today Energy, 19. DOI: 10.1016/j.mtener.2020.100587

Sinusaite, L., Antuzevics, A., Popov, A.I., Rogulis, U., Misevicius, M., Katelnikovas, A., Kareiva, A., Zarkov, A., Synthesis and luminescent properties of Mn-doped alpha-tricalcium phosphate (2021) Ceramics International, 47, pp.5335-5340. DOI: 10.1016/j.ceramint.2020.10.114

Supe, A., Olonkins, S., Udalcovs, A., Senkans, U., Mūrnieks, R., Gegere, L., Prigunovs, D., Grube, J., Elsts, E., Spolitis, S., Ozolins, O., Bobrovs, V., Cladding-pumped erbium/ytterbium co-doped fiber amplifier for c-band operation in optical networks (2021) Applied Sciences (Switzerland), 11, pp.1-13. DOI: 10.3390/app11041702

Cipa, J., Trinkler, L., Berzina, B., Thermoluminescence Response of AlN+Y2O3Ceramics to Sunlight and X-Ray Irradiation (2021) Latvian Journal of Physics and Technical Sciences, 58, pp.3-14. DOI: 10.2478/lpts-2021-0001

Einbergs, E., Zolotarjovs, A., Bite, I., Cipa, J., Vitola, V., Laganovska, K., Trinkler, L., Re-Evaluation of Chromium Doped Alumina for Dosimetric Applications (2021) Latvian Journal of Physics and Technical Sciences, 58, pp.15-22. DOI: 10.2478/lpts-2021-0002

Kirdeikiene, A., Girčiene, O., Gudavičiūte, L., Jasulaitiene, V., Selskis, A., Tutliene, S., Skruodiene, M., Pilipavičius, J., Juodkazyte, J., Ramanauskas, R., Self-healing properties of cerium-modified molybdate conversion coating on steel (2021) Coatings, 11, pp.1-15. DOI: 10.3390/coatings11020194

Shurtakova, D.V., Yavkin, B.V., Mamin, G.V., Orlinskii, S.B., Sirotinkin, V.P., Fedotov, A.Y., Shinkarev, A., Antuzevics, A., Smirnov, I.V., Tovtin, V.I., Starostin, E.E., Gafurov, M.R., Komlev, V.S., X-ray diffraction and multifrequency epr study of radiation-induced room temperature stable radicals in octacalcium phosphate (2021) Radiation Research, 195, pp.200-210. DOI: 10.1667/RADE-20-00194.1

Laurikenas, A., Sakalauskas, D., Marsalka, A., Raudonis, R., Antuzevics, A., Balevicius, V., Zarkov, A., Kareiva, A., Investigation of lanthanum substitution effects in yttrium aluminium garnet: importance of solid state NMR and EPR methods (2021) Journal of Sol-Gel Science and Technology, 97, pp.479-487. DOI: 10.1007/s10971-020-05445-2

Elsts, E., Kemere, M., Omelkov, S., Krieke, G., Popov, A.I., Fast luminescence studies of NaLaF4:Pr3+ glass ceramics (2021) 2021 IEEE 12th International Conference on Electronics and Information Technologies, ELIT 2021 - Proceedings, pp.287-290. DOI: 10.1109/ELIT53502.2021.9501063

Dudutienė, E., Jasinskas, A., Čechavičius, B., Nedzinskas, R., Jokubauskaitė, M., Bičiūnas, A., Bukauskas, V., Valušis, G., Butkutė, R., Photoluminescence properties of gaasbi single quantum wells with 10% of Bi [Gaasbi kvantinių duobių su 10 % bismuto fotoliuminescencinės savybės] (2021) Lithuanian Journal of Physics, 61, pp.142-150. DOI: 10.3952/physics.v61i2.4442

2020

Dunce, M., Krieke, G., Birks, E., Bikse, L., Antonova, M., Sarakovskis, A., The role of structural disorder on luminescence of Eu-doped Na0.5Bi0.5TiO3 (2020) Journal of Applied Physics, 128. DOI: 10.1063/5.0031305

Kaminska, A., Koronski, K., Strak, P., Wierzbicka, A., Sobanska, M., Klosek, K., Nechaev, D.V., Pankratov, V., Chernenko, K., Krukowski, S., Zytkiewicz, Z.R., Defect-related photoluminescence and photoluminescence excitation as a method to study the excitonic bandgap of AlN epitaxial layers: Experimental and ab initio analysis (2020) Applied Physics Letters, 117. DOI: 10.1063/5.0027743

Zubkins, M., Gabrusenoks, J., Chikvaidze, G., Aulika, I., Butikova, J., Kalendarev, R., Bikse, L., Amorphous ultra-wide bandgap ZnOxthin films deposited at cryogenic temperatures (2020) Journal of Applied Physics, 128. DOI: 10.1063/5.0028901

Karbovnyk, I., Pankratov, V., Velgosh, S., Bolesta, I., Lys, R., Kityk, I., Klym, H., Makarenko, I., Pankratova, V., Popov, A.I., Low-temperature luminescence of CdI2 under synchrotron radiation (2020) Fizika Nizkikh Temperatur, 46, pp.1426-1429.

Kozlova, A.P., Buzanov, O.A., Pankratova, V., Pankratov, V., Low-temperature luminescence of catangasite single crystals under excitation by vacuum ultraviolet synchrotron radiation (2020) Fizika Nizkikh Temperatur, 46, pp.1386-1393.

Pankratova, V., Purans, J., Pankratov, V., Low-temperature luminescence of ScF3 single crystals under excitation by VUV synchrotron radiation (2020) Fizika Nizkikh Temperatur, 46, pp.1407-1412.

Antuzevics, A., EPR characterization of erbium in glasses and glass ceramics (2020) Fizika Nizkikh Temperatur, 46, pp.1353-1358.

Mironova-Ulmane, N., Popov, A.I., Krieke, G., Antuzevics, A., Skvortsova, V., Elsts, E., Sarakovskis, A., Low-temperature studies of Cr3+ ions in natural and neutron-irradiated Mg-Al spinel (2020) Fizika Nizkikh Temperatur, 46, pp.1359-1364.

Antuzevics, A., EPR characterization of erbium in glasses and glass ceramics (2020) Low Temperature Physics, 46, pp.1149-1153. DOI: 10.1063/10.0002465

Pankratova, V., Purans, J., Pankratov, V., Low-temperature luminescence of ScF3single crystals under excitation by VUV synchrotron radiation (2020) Low Temperature Physics, 46, pp.1196-1200. DOI: 10.1063/10.0002473

Karbovnyk, I., Pankratov, V., Velgosh, S., Bolesta, I., Lys, R., Kityk, I., Klym, H., Makarenko, I., Pankratova, V., Popov, A.I., Low-temperature luminescence of CdI2under synchrotron radiation (2020) Low Temperature Physics, 46, pp.1213-1216. DOI: 10.1063/10.0002476

Mironova-Ulmane, N., Popov, A.I., Krieke, G., Antuzevics, A., Skvortsova, V., Elsts, E., Sarakovskis, A., Low-temperature studies of Cr3+ions in natural and neutron-irradiated g-Al spinel (2020) Low Temperature Physics, 46, pp.1154-1159. DOI: 10.1063/10.0002467

Kozlova, A.P., Buzanov, O.A., Pankratova, V., Pankratov, V., Low-temperature luminescence of catangasite single crystals under excitation by vacuum ultraviolet synchrotron radiation (2020) Low Temperature Physics, 46, pp.1178-1184. DOI: 10.1063/10.0002471

Pankratova, V., Kozlova, A.P., Buzanov, O.A., Chernenko, K., Shendrik, R., Šarakovskis, A., Pankratov, V., Time-resolved luminescence and excitation spectroscopy of Co-doped Gd3Ga3Al2O12 scintillating crystals (2020) Scientific Reports, 10. DOI: 10.1038/s41598-020-77451-x

Trukhin, A., Trinkler, L., Zolotarjovs, A., Pyroelectric activity of LiGaO2, Li2GeO3, Li2B4O7 and LiNbO3 crystals: Pyroelectric luminescence and excitation of cathodoluminescence in scintillator ScPO4 (2020) Optical Materials, 109. DOI: 10.1016/j.optmat.2020.110391

Dunce, M., Birks, E., Antonova, M., Ignatans, R., Nitiss, E., Kundzinsh, M., Grube, J., Sarakovskis, A., Sternberg, A., Photoluminescence in Er-doped 0.4Na1/2Bi1/2TiO3-(0.6-x)SrTiO3-xPbTiO3 solid solutions (2020) Ferroelectrics, 567, pp.150-159. DOI: 10.1080/00150193.2020.1791599

Kamarauskas, M., Agafonov, V., Daugalas, T., Balakauskas, S., Mironas, A., Nedzinskas, R., Niaura, G., Treideris, M., Šetkus, A., Photovoltaic effect-driven IR response of heterojunctions obtained by direct CVD synthesis of MoS2nanolayers on crystalline silicon (2020) Nanotechnology, 31. DOI: 10.1088/1361-6528/ab98c0

Lisitsyn, V.M., Vaganov, V.A., Lisitsyna, L.A., Karipbayev, Z.T., Kemere, M., Tulegenova, A.T., Ju, Y., Panchenko, Y.N., Luminescence of YAG:Ce Phosphors Excited by UV Laser Radiation (2020) Russian Physics Journal, 63, pp.1003-1009. DOI: 10.1007/s11182-020-02130-3

Popov, A.I., Elsts, E., Kotomin, E.A., Moskina, A., Karipbayev, Z.T., Makarenko, I., Pazylbek, S., Kuzovkov, V.K., Thermal annealing of radiation defects in MgF2 single crystals induced by neutrons at low temperatures (2020) Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 480, pp.16-21. DOI: 10.1016/j.nimb.2020.07.026

Mironova-Ulmane, N., Popov, A.I., Antuzevics, A., Krieke, G., Elsts, E., Vasil'chenko, E., Sildos, I., Puust, L., Ubizskii, S.B., Sugak, D., Skvortsova, V., Dauletbekova, A., Kumarbekov, K., Sarakovskis, A., EPR and optical spectroscopy of neutron-irradiated Gd3Ga5O12 single crystals (2020) Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 480, pp.22-26. DOI: 10.1016/j.nimb.2020.07.024

Berzina, B., Trinkler, L., Korsaks, V., Ruska, R., Nitrogen vacancy type defect luminescence of AlN nanopowder (2020) Optical Materials, 108. DOI: 10.1016/j.optmat.2020.110069

Karipbayev, Z.T., Lisitsyn, V.M., Mussakhanov, D.A., Alpyssova, G.K., Popov, A.I., Polisadova, E.F., Elsts, E., Akilbekov, A.T., Kukenova, A.B., Kemere, M., Sarakovskis, A., Lushchik, A., Time-resolved luminescence of YAG:Ce and YAGG:Ce ceramics prepared by electron beam assisted synthesis (2020) Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 479, pp.222-228. DOI: 10.1016/j.nimb.2020.06.046

Eglitis, R.I., Purans, J., Gabrusenoks, J., Popov, A.I., Jia, R., Comparative ab initio calculations of reo3, srzro3, bazro3, pbzro3 and cazro3 (001) surfaces (2020) Crystals, 10, pp.1-13. DOI: 10.3390/cryst10090745

Dendebera, M., Chornodolskyy, Y., Gamernyk, R., Antonyak, O., Pashuk, I., Myagkota, S., Gnilitskyi, I., Pankratov, V., Vistovskyy, V., Mykhaylyk, V., Grinberg, M., Voloshinovskii, A., Time resolved luminescence spectroscopy of CsPbBr3 single crystal (2020) Journal of Luminescence, 225. DOI: 10.1016/j.jlumin.2020.117346

Supe, A., Spolitis, S., Elsts, E., Murnieks, R., Doke, G., Senkans, U., Matsenko, S., Grube, J., Bobrovs, V., Recent developments in cladding-pumped doped fiber amplifiers for telecommunications systems (2020) International Conference on Transparent Optical Networks, 2020-July. DOI: 10.1109/ICTON51198.2020.9203436

Pankratov, V., Kotlov, A., Luminescence spectroscopy under synchrotron radiation: From SUPERLUMI to FINESTLUMI (2020) Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 474, pp.35-40. DOI: 10.1016/j.nimb.2020.04.015

Sinusaite, L., Popov, A., Antuzevics, A., Mazeika, K., Baltrunas, D., Yang, J.-C., Horng, J.L., Shi, S., Sekino, T., Ishikawa, K., Kareiva, A., Zarkov, A., Fe and Zn co-substituted beta-tricalcium phosphate (β-TCP): Synthesis, structural, magnetic, mechanical and biological properties (2020) Materials Science and Engineering C, 112. DOI: 10.1016/j.msec.2020.110918

Antuzevics, A., Fedotovs, A., Berzins, D., Rogulis, U., Auzins, K., Zolotarjovs, A., Baldochi, S.L., Recombination luminescence of X-ray induced paramagnetic defects in BaY2F8 (2020) Journal of Luminescence, 223. DOI: 10.1016/j.jlumin.2020.117216

Tuomela, A., Zhang, M., Huttula, M., Sakirzanovas, S., Kareiva, A., Popov, A.I., Kozlova, A.P., Aravindh, S.A., Cao, W., Pankratov, V., Luminescence and vacuum ultraviolet excitation spectroscopy of samarium doped SrB4O7 (2020) Journal of Alloys and Compounds, 826. DOI: 10.1016/j.jallcom.2020.154205

Drabavičius, A., Naujokaitis, A., Stalnionis, G., Giraitis, R., Mockus, Z., Kanapeckaitė, S., Kalinauskas, P., Nedzinskas, R., Niaura, G., Juškėnas, R., Photoelectrochemical, Raman spectroscopy, XRD and photoluminescence study of disorder in electrochemically deposited kesterite thin film (2020) Journal of Alloys and Compounds, 824. DOI: 10.1016/j.jallcom.2020.153853

Shalaev, A., Shendrik, R., Rusakov, A., Bogdanov, A., Pankratov, V., Chernenko, K., Myasnikova, A., Luminescence of divalent lanthanide doped BaBrI single crystal under synchrotron radiation excitations (2020) Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 467, pp.17-20. DOI: 10.1016/j.nimb.2020.01.023

Kozlova, A.P., Kasimova, V.M., Buzanov, O.A., Chernenko, K., Klementiev, K., Pankratov, V., Luminescence and vacuum ultraviolet excitation spectroscopy of cerium doped Gd3Ga3Al2O12 single crystalline scintillators under synchrotron radiation excitations (2020) Results in Physics, 16. DOI: 10.1016/j.rinp.2020.103002

Yan, T., Trinkler, L., Korsaks, V., Lu, C.-Y.J., Berzina, B., Chang, L., Chou, M.M.C., Ploog, K.H., Anisotropic photoluminescence of nonpolar ZnO epilayers and ZnO/Zn1−xMgxO multiple quantum wells grown on LiGaO2 substrate (2020) Optics Express, 28, pp.5629-5638. DOI: 10.1364/OE.385828

Rodionovs, P., Grabis, J., Photocatalytic activity of Eu2O3/ZnO and Sm2O3/ZnO prepared by microwave-assisted hydrothermal method (2020) NANOCON Conference Proceedings - International Conference on Nanomaterials, 2020-October, pp.163-168. DOI: 10.37904/nanocon.2019.8562

Rodionovs, P., Grabis, J., Zno photocatalysts modified with eu2o3 and sm2o3 (2020) Key Engineering Materials, 850 KEM, pp.35-40. DOI: 10.4028/www.scientific.net/KEM.850.35

2019

Antuzevics, A., Krieke, G., Pavlovska, E., Rogulis, U., Eu3+ ion distribution in oxyfluoride glass nanocomposites (2019) Journal of Non-Crystalline Solids, 522. DOI: 10.1016/j.jnoncrysol.2019.119548

Einbergs, E., Zolotarjovs, A., Bite, I., Laganovska, K., Auzins, K., Smits, K., Trinkler, L., Usability of Cr-doped alumina in dosimetry (2019) Ceramics, 2, pp.525-535. DOI: 10.3390/ceramics2030040

Varnagiris, S., Medvids, A., Lelis, M., Milcius, D., Antuzevics, A., Black carbon-doped TiO2 films: Synthesis, characterization and photocatalysis (2019) Journal of Photochemistry and Photobiology A: Chemistry, 382. DOI: 10.1016/j.jphotochem.2019.111941

Krieke, G., Antuzevics, A., Springis, M., Rogulis, U., Upconversion luminescence in transparent oxyfluoride glass ceramics containing hexagonal NaErF4 (2019) Journal of Alloys and Compounds, 798, pp.326-332. DOI: 10.1016/j.jallcom.2019.05.276

Trinkler, L., Trukhin, A., Cipa, J., Berzina, B., Korsaks, V., Chou, M.M.C., Li, C.-A., Spectral and kinetic characteristics of pyroelectric luminescence in LiGaO2 (2019) Optical Materials, 94, pp.15-20. DOI: 10.1016/j.optmat.2019.05.014

Sinusaite, L., Renner, A.M., Schütz, M.B., Antuzevics, A., Rogulis, U., Grigoraviciute-Puroniene, I., Mathur, S., Zarkov, A., Effect of Mn doping on the low-temperature synthesis of tricalcium phosphate (TCP) polymorphs (2019) Journal of the European Ceramic Society, 39, pp.3257-3263. DOI: 10.1016/j.jeurceramsoc.2019.03.057

Trukhin, A., Trinkler, L., Photoconductivity & photoelectron emission of LiGaO2 crystal excited in intrinsic absorption range (2019) Optical Materials, 93, pp.11-14. DOI: 10.1016/j.optmat.2019.05.005

Cipa, J., Zarins, A., Supe, A., Kizane, G., Zolotarjovs, A., Baumane, L., Trinkler, L., Leys, O., Knitter, R., X-ray induced defects in advanced lithium orthosilicate pebbles with additions of lithium metatitanate (2019) Fusion Engineering and Design, 143, pp.10-15. DOI: 10.1016/j.fusengdes.2019.03.096

Seeman, V., Feldbach, E., Kärner, T., Maaroos, A., Mironova-Ulmane, N., Popov, A.I., Shablonin, E., Vasil'chenko, E., Lushchik, A., Fast-neutron-induced and as-grown structural defects in magnesium aluminate spinel crystals with different stoichiometry (2019) Optical Materials, 91, pp.42-49. DOI: 10.1016/j.optmat.2019.03.008

Mironova-Ulmane, N., Kuzmin, A., Sildos, I., Puust, L., Grabis, J., Magnon and Phonon Excitations in Nanosized NiO (2019) Latvian Journal of Physics and Technical Sciences, 56, pp.61-72. DOI: 10.2478/lpts-2019-0014

Grigorjeva, L., Grube, J., Bite, I., Zolotarjovs, A., Smits, K., Millers, D., Rodnyi, P., Chernenko, K., Sub-nanosecond excitonic luminescence in ZnO:In nanocrystals (2019) Radiation Measurements, 123, pp.69-73. DOI: 10.1016/j.radmeas.2019.02.016

Skruodiene, M., Katelnikovas, A., Vasylechko, L., Skaudzius, R., Tb 3+ to Cr 3+ energy transfer in a co-doped Y 3 Al 5 O 12 host (2019) Journal of Luminescence, 208, pp.327-333. DOI: 10.1016/j.jlumin.2018.12.048

Grigorjeva, L., Zolotarjovs, A., Bite, I., Grube, J., Millers, D., Electronic processes in doped ZnO nanopowders (2019) IOP Conference Series: Materials Science and Engineering, 503. DOI: 10.1088/1757-899X/503/1/012017

Sternberg, A., Grīnberga, L., Şarakovskis, A., Rutkis, M., Preface (2019) IOP Conference Series: Materials Science and Engineering, 503. DOI: 10.1088/1757-899X/503/1/011001

Pentjuss, E., Balodis, J., Vdovicenko, M., Gabrusenoks, J., Bajars, G., Petersone, L., Kleperis, J., Mass recovery of carbonated fabrics of glass fibres after isothermal heating (2019) IOP Conference Series: Materials Science and Engineering, 503. DOI: 10.1088/1757-899X/503/1/012027

Trukhin, A., Antuzevics, A., Photoluminescence and Electron Spin Resonance of Silicon Dioxide Crystal with Rutile Structure (Stishovite) (2019) Physica Status Solidi (A) Applications and Materials Science, 216. DOI: 10.1002/pssa.201800457

Pankratov, V., Pärna, R., Kirm, M., Nagirnyi, V., Nõmmiste, E., Omelkov, S., Vielhauer, S., Chernenko, K., Reisberg, L., Turunen, P., Kivimäki, A., Kukk, E., Valden, M., Huttula, M., Progress in development of a new luminescence setup at the FinEstBeAMS beamline of the MAX IV laboratory (2019) Radiation Measurements, 121, pp.91-98. DOI: 10.1016/j.radmeas.2018.12.011

Antuzevics, A., EPR in glass ceramics (2019) Experimental Methods in the Physical Sciences, 50, pp.161-190. DOI: 10.1016/B978-0-12-814024-6.00008-X

Rodionovs, P., Jankoviča, D., Grabis, J., Characteristics and photocatalytic activity of Sm doped ZnO nanoparticles (2019) Key Engineering Materials, 799 KEM, pp.179-184. DOI: 10.4028/www.scientific.net/KEM.799.179

Luchechko, A., Zhydachevskyy, Y., Ubizskii, S., Kravets, O., Popov, A.I., Rogulis, U., Elsts, E., Bulur, E., Suchocki, A., Afterglow, TL and OSL properties of Mn2+-doped ZnGa2 O4 phosphor (2019) Scientific Reports, 9. DOI: 10.1038/s41598-019-45869-7

Paris, P., Butikova, J., Laan, M., Hakola, A., Jõgi, I., Likonen, J., Grigore, E., Ruset, C., Comparison of LIBS results on ITER-relevant samples obtained by nanosecond and picosecond lasers (2019) Nuclear Materials and Energy, 18, pp.1-5. DOI: 10.1016/j.nme.2018.11.018

2018

Bite, I., Krieke, G., Zolotarjovs, A., Laganovska, K., Liepina, V., Smits, K., Auzins, K., Grigorjeva, L., Millers, D., Skuja, L., Novel method of phosphorescent strontium aluminate coating preparation on aluminum (2018) Materials and Design, 160, pp.794-802. DOI: 10.1016/j.matdes.2018.10.021

Trinkler, L., Trukhin, A., Chou, M.M.C., Comparison of Luminescence in LiGaO 2 , Al 2 O 3 -Ga and Al 2 O 3 -Li Crystals (2018) Latvian Journal of Physics and Technical Sciences, 55, pp.4-12. DOI: 10.2478/lpts-2018-0038

Mironova-Ulmane, N., Sildos, I., Vasil'chenko, E., Chikvaidze, G., Skvortsova, V., Kareiva, A., Muñoz-Santiuste, J.E., Pareja, R., Elsts, E., Popov, A.I., Optical absorption and Raman studies of neutron-irradiated Gd3Ga5O12 single crystals (2018) Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 435, pp.306-312. DOI: 10.1016/j.nimb.2018.02.006

Aplesnin, S.S., Udod, L.V., Sitnikov, M.N., Kretinin, V.V., Molokeev, M.S., Mironova-Ulmane, N., Dipole glass in chromium-substituted bismuth pyrostannate (2018) Materials Research Express, 5. DOI: 10.1088/2053-1591/aaddd9

Grube, J., Krieke, G., How activator ion concentration affects spectroscopic properties on Ba4Y3F17: Er3+, Yb3+, a new perspective up-conversion material (2018) Journal of Luminescence, 203, pp.376-384. DOI: 10.1016/j.jlumin.2018.06.052

Dunce, M., Krieke, G., Birks, E., Antonova, M., Eglite, L., Grube, J., Sarakovskis, A., The role of disorder on Er3+ luminescence in Na1/2Bi1/2TiO3 (2018) Journal of Alloys and Compounds, 762, pp.326-333. DOI: 10.1016/j.jallcom.2018.05.246

Antuzevics, A., Kemere, M., Krieke, G., Multisite formation in gadolinium doped SrF2 nanoparticles (2018) Journal of Alloys and Compounds, 762, pp.500-507. DOI: 10.1016/j.jallcom.2018.05.283

Krieke, G., Sarakovskis, A., Springis, M., Cubic and rhombohedral Ba4Lu3F17:Er3+ in transparent glass ceramics: Crystallization and upconversion luminescence (2018) Journal of Luminescence, 200, pp.265-273. DOI: 10.1016/j.jlumin.2018.04.016

Shi, X., Posysaev, S., Huttula, M., Pankratov, V., Hoszowska, J., Dousse, J.-C., Zeeshan, F., Niu, Y., Zakharov, A., Li, T., Miroshnichenko, O., Zhang, M., Wang, X., Huang, Z., Saukko, S., González, D.L., van Dijken, S., Alatalo, M., Cao, W., Metallic Contact between MoS2 and Ni via Au Nanoglue (2018) Small, 14. DOI: 10.1002/smll.201704526

Butanovs, E., Vlassov, S., Kuzmin, A., Piskunov, S., Butikova, J., Polyakov, B., Fast-Response Single-Nanowire Photodetector Based on ZnO/WS2 Core/Shell Heterostructures (2018) ACS Applied Materials and Interfaces, 10, pp.13869-13876. DOI: 10.1021/acsami.8b02241

Antuzevics, A., Rogulis, U., Fedotovs, A., Popov, A.I., Crystalline phase detection in glass ceramics by EPR spectroscopy (2018) Fizika Nizkikh Temperatur, 44, pp.449-454.

Mironova-Ulmane, N., Kuzmin, A., Skvortsova, V., Chikvaidze, G., Sildos, I., Grabis, J., Jankoviča, D., Dindune, A., Maiorov, M., Synthesis and vibration spectroscopy of nano-sized manganese oxides (2018) Acta Physica Polonica A, 133, pp.1013-1016. DOI: 10.12693/APhysPolA.133.1013

Rogulis, U., Fedotovs, A., Antuzevics, A., Berzins, D., Zhydachevskyy, Y., Sugak, D., Optical detection of paramagnetic centres in activated oxyfluoride glass-ceramics (2018) Acta Physica Polonica A, 133, pp.785-788. DOI: 10.12693/APhysPolA.133.785

Antuzevics, A., Rogulis, U., Fedotovs, A., Popov, A.I., Crystalline phase detection in glass ceramics by EPR spectroscopy (2018) Low Temperature Physics, 44, pp.341-345. DOI: 10.1063/1.5030462

Vlassov, S., Oras, S., Antsov, M., Butikova, J., Lõhmus, R., Polyakov, B., Low-friction nanojoint prototype (2018) Nanotechnology, 29. DOI: 10.1088/1361-6528/aab163

Kemere, M., Rogulis, U., Sperga, J., Luminescence and energy transfer in Dy3+/Eu3+ co-doped aluminosilicate oxyfluoride glasses and glass-ceramics (2018) Journal of Alloys and Compounds, 735, pp.1253-1261. DOI: 10.1016/j.jallcom.2017.11.077

Krieke, G., Sarakovskis, A., Springis, M., Upconversion luminescence of Er3 +/Yb3 + and their role in the stabilization of cubic NaLaF4 nanocrystals in transparent oxyfluoride glass ceramics (2018) Journal of Non-Crystalline Solids, 481, pp.335-343. DOI: 10.1016/j.jnoncrysol.2017.11.016

Rodionovs, P., Grabis, J., Krumina, A., Microwave-assisted hydrothermal synthesis of znfe2o4/tio2 composite and photocatalytic properties (2018) Key Engineering Materials, 788 KEM, pp.102-107. DOI: 10.4028/www.scientific.net/KEM.788.102

Artyukhov, A., Gabrusenoks, J., Phase composition and nanoporous structure of core and surface in the modified granules of NH4NO3 (2018) Springer Proceedings in Physics, 210, pp.301-309. DOI: 10.1007/978-3-319-91083-3_21

Artyukhov, A.E., Gabrusenoks, J., Rossi, P.C., Obtaining of the modified NH4NO3 granules with 3-d nanoporous structure: Impact of humidifier type on the granule’s structure (2018) Springer Proceedings in Physics, 214, pp.395-405. DOI: 10.1007/978-3-319-92567-7_25

Butanovs, E., Butikova, J., Zolotarjovs, A., Polyakov, B., Towards metal chalcogenide nanowire-based colour-sensitive photodetectors (2018) Optical Materials, 75, pp.501-507. DOI: 10.1016/j.optmat.2017.11.010

Krieke, G., Sarakovskis, A., Springis, M., Ordering of fluorite-type phases in erbium-doped oxyfluoride glass ceramics (2018) Journal of the European Ceramic Society, 38, pp.235-243. DOI: 10.1016/j.jeurceramsoc.2017.08.037

European patent White light emitter compound material for luminescent lamps and method for making same. European patent specification number EP 2883933 B1; Date of publication and mention of the grant of the patent 01.02.2017. Authors: B.Berzina, V.Korsaks, L.Trinkler, M.Knite, J.Grabis.

European patent Oxygen gas sensor. European patent application number EP 3121589 A1; Date of publication 25.01.2017. Authors: B.Berzina, L.Trinkler, V.Korsaks, J.Grabis.