Dr. Patrik Ščajev

Dr. Patrik Ščajev

Phone: +370 647 12 151

E-mail: 

Institute of Photonics and Nanotechnology (IPN)

Physics, applied sciences

Senior researcher

Semiconductor characterization; time resolved pump-probe, photoconductivity and photoluminescence techniques; oxide, nitride, carbide, telluride, perovskite semiconductors; germanium-tin compounds.

https://scholar.google.lt/citations?hl=lt&user=XkfccoEAAAAJ;

https://www.researchgate.net/profile/Patrik-Scajev;

https://orcid.org/0000-0001-9588-0570

1. P. Ščajev, R. Durena, P. Onufrijevs, S. Miasojedovas, T. Malinauskas, S. Stanionyte, A. Zarkov, A. Zukuls, I. Bite, K. Smits, „Morphological and optical property study of Li doped ZnO produced by microwave-assisted solvothermal synthesis“, Materials Science in Semiconductor Processing 135, 106069 (2021), https://doi.org/10.1016/j.mssp.2021.106069.
2. P. Ščajev, V. Soriūtė, G. Kreiza, S. Nargelas, D. Dobrovolskas, T. Malinauskas, L. Subačius, P. Onufrijevs, S. Varnagiris, H.-H. Cheng, „Temperature and spatial dependence of carrier lifetime and luminescence intensity in Ge0.95Sn0.05 layer”, Mater. Sci Eng. B, 270, 115204 (2021). DOI:10.1016/j.mseb.2021.115204
3. P. Ščajev, P. Onufrijevs, A. Mekys, T. Malinauskas, D. Augulis, L. Subacius, K.-C. Lee, J. Kaupuzs, S. Varnagiris, A. Medvids, H. H. Cheng, “Extension of spectral sensitivity of GeSn IR photodiode after laser annealing”, Applied Surface Science 555, 149711 (2021), DOI: 10.1016/j.apsusc.2021.149711.
4. P. Ščajev, S. Miasojedovas and S. Juršėnas, “Carrier density dependent diffusion coefficient, recombination rate and diffusion length in MAPbI3 and MAPbBr3 crystals measured under one- and two- photon excitations”, Journal of Materials Chemistry C 8, 10290-10301 (2020); DOI: 10.1039/D0TC02283G.
5. P. Ščajev, D. Litvinas, V. Soriu̅te, G. Kreiza, S. Stanionyte, S. Juršėnas, “Crystal Structure Ideality Impact on Bimolecular, Auger, and Diffusion Coefficients in Mixed-Cation CsxMA1−xPbBr3 and CsxFA1−xPbBr3 Perovskites”, J. Phys. Chem. C 123, 23838−23844 (2019); DOI: 10.1021/acs.jpcc.9b05824.
6. P. Ščajev, R. Aleksiejunas, P. Baronas, D. Litvinas, M. Kolenda, C. Qin, T. Fujihara, T. Matsushima, C. Adachi, S. Juršėnas, “Carrier Recombination and Diffusion in Wet-Cast Tin Iodide Perovskite Layers Under High Intensity Photoexcitation”, J. Phys. Chem. C 123, 19275-19281 (2019); DOI: 10.1021/acs.jpcc.9b03226.
7. P. Ščajev, R. Aleksiejunas, S. Terakawa, C. Qin, T. Fujihara, T. Matsushima, C. Adachi, and S. Juršėnas, “Anisotropy of Thermal Diffusivity in Lead Halide Perovskite Layers Revealed by Thermal Grating Technique”, J. Phys. Chem. C 123, 14914-14920 (2019); DOI: 10.1021/acs.jpcc.9b02288.
8. P. Ščajev, C. Qin, R. Aleksiejunas, P. Baronas, S. Miasojedovas, T. Fujihara, T. Matsushima, C. Adachi, and S. Juršėnas, “Diffusion Enhancement in Highly Excited MAPbI3 Perovskite Layers with Additives”, J. Phys. Chem. Lett. 9, 3167–3172 (2018); DOI: 10.1021/acs.jpclett.8b01155.
9. P. Ščajev, R. Aleksiejunas, S. Miasojedovas, S. Nargelas, M. Inoue, C. Qin, T. Matsushima, C. Adachi, and S. Juršėnas, “Two regimes of carrier diffusion in vapor deposited lead-halide perovskites”, J. Phys. Chem. C 121, 21600-21609 (2017); DOI: 10.1021/acs.jpcc.7b04179.
10. P. Ščajev, T. Malinauskas, G. Seniutinas, M.D. Arnold, A. Gentle, I. Aharonovich, G. Gervinskas, P. Michaux, J.S. Hartley, E.L.H. Mayes, P.R. Stoddart, S. Juodkazis, “Light-induced reflectivity transients in black-Si nanoneedles”, Solar Energy Materials & Solar Cells 144, 221–227 (2016); DOI: 10.1016/j.solmat.2015.08.030.

1)ESF project: Perovskite white LED (PWLED), project Nr. 09.3.3- LMT-K- 712-02- 0009, 2017-2019, 53813.76 Eur, postdoc Patrik Ščajev;

2) Lithuanian-Latvian-Taiwan mutual cooperation project, “GeSn-based photo sensor from basic research to applications” (GeSen), Nr. P-LLT-18-6, VU budget 75000 USD, 2018-2020, leader Patrik Ščajev;

3) Lithuanian Science Council project: “Spectrally and Temporally Resolved Absorption and Photoluminescence Electro-optic Recorder” (STRAPER), Nr. S-MIP-19-34, 2019-2022, 149982 Eur, leader Patrik Ščajev;

4) Lithuanian Science Council project: „Electronic and thermal properties of nanocrystalline perovskite light emitters“ (09.3.3-LMT-K-712-22-0217, 2020-2021), 2963,72 Eur, leader Patrik Ščajev.;

5) COST action: “European Network for Innovative and Advanced Epitaxy” (CA20116, P-COST-21-6, 2021-2025), VU representative Patrik Ščajev.

Supervision of PHD student.

Two bachelor, one master students.