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Information × Registration Number 0221U106497, 0120U105573 , R & D reports Title Promising semiconductor nanomaterials for flexible electronics: synthesis, development of printing methods and optimization of structural, optiсal and photoelectric properties. popup.stage_title Head Hnatenko Yurii P., Доктор фізико-математичних наук Registration Date 08-12-2021 Organization Institute of Physics of National Academy of Sciences of Ukraine popup.description2 Purpose: analysis of the current state of optical studies of film materials of oxide semiconductors. Establishment of the nature of electronic processes in Cu2ZnSnS4 and Cu2ZnSnSe4t hin films as well as SnS nanoparticles obtained using the method of printing on 2D and 3D printers, the nature of defects and their optical quality depending on the physicochemical conditions of their production.The manifestation of the quantum-dimensional effect in the photoluminescence (PL) spectra of CZTSe nanoparticles was established, which leads to a short-wavelength shift of the maximum of the PL band. The size of nanocrystallites was estimated. It is shown that the PL bands for CZTS nanoparticles are caused by band-to-band transitions and the recombination of donor-acceptor pairs. Deformation of energy bands of kesterite nanoparticles as a result of the presence of fluctuations in the crystal field potential and fluctuations in the electrostatic potential of charged defects was revealed. The absence of secondary phases of Cu2SnS3 and Cu2S was established. For solid solutions of CZTS1-XSeX, the structure of the PL spectra, which is associated with the recombination processes involving the energy bands of the CZTS and CZTSe compounds, modified during the formation of the solid solution, was studied. Analysis of the PL spectrum structure of the kesterite CZTSe and CZTS nanoparticles showed the presence of secondary phases ZnSe and ZnS, respectively. The nature of PL bands of SnS nanoparticles was established, where the presence of SnS2 secondary phase and oxygen with possible formation of SnO2 nanoparticles was detected. The PL kinetics of SnS nanoparticles, which takes place in the nanosecond range, was studied. Product Description popup.authors Bukivskyi Anatolii Petrovych Gnatenko Yuriy Pavlovych popup.nrat_date 2021-12-08 Close