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Information × Registration Number 0122U001860, ( 0225U002752  ) R & D request Title Relaxation of electronic excitations in inorganic halogen perovskites of ABX3 type Head Voloshynovskyi Anatolii S., Доктор фізико-математичних наук Registration Date 21-02-2022 Organization Ivan Franko National University of Lviv popup.description1 The aim of the project is to elucidate the mechanisms of electronic and exciton relaxation in new functional materials based on halogen perovskites ABX3 (A = Cs, Rb, K; B = Pb, Sn; X = F, Cl, Br, I). The project involves the synthesis and study of physical parameters of inorganic halide perovskites and nanostructures based on them. The main task will be to establish the laws of radiative relaxation of electronic excitations, the nature of emission centers, their spectral and kinetic characteristics. The problems of developing scintillation detectors with picosecond time resolution, development of methods for obtaining nanoparticles embedded into bulk materials for luminescent materials, increasing the efficiency of photoconverters and photodetectors, expanding the spectral range of emission, increasing the stability of perovskite materials will be solved. To achieve the aims the project provides: 1) grown of perovskite single crystals, micro- and nanocrystals incapsulated in dielectric matrices; 2) synthesis of colloidal nanoparticles and nanostructures based on them; 3) the study of luminescent parameters of samples in the temperature range of 10-300 K under the optical, synchrotron, X-ray and femtosecond laser excitation; 4) calculation of exchange interaction in exciton states, calculation of the band energy structure of perovskites by taking into account the spin-orbit interaction and the Rashba effect; 5) development of a model of emission centers and the mechanism of the scintillation process in single crystals and nanocomposites based on perovskites. popup.nrat_date 2024-12-09 Close