Search academic texts

Information × Registration Number 0221U106927, 0121U113504 , R & D reports Title Development of advanced thin film photovoltaic materials based on nanocrystals of cation-substituted Cu2ZnSnS4 popup.stage_title Head Dzhahan Volodymyr M., Доктор фізико-математичних наук Registration Date 22-12-2021 Organization VE Lashkarev Institute of Semiconductor Physics of the National Academy of Sciences of Ukraine popup.description2  AgxCu2-xZnSnS4 nanocrystals with different nominal ratios of components were synthesized directly in aqueous solutions by the method of "green" colloid chemistry. Based on a detailed study of the obtained NC samples by X-ray diffractometry, XPS and Raman spectroscopy, a significant content of the secondary (impurity) phase of Ag-Zn-S was determined. The latter is studied for the first time and is a promising photovoltaic material given the simplicity of synthesis and the edge of optical absorption at 0.8-0.9 eV. The main attention in the spectroscopic characterization of the obtained NCs was paid to the identification of the secondary phases of binary and ternary compounds. Their characteristic vibrational (Raman) spectra have been established, which will be used in further research as a reliable method of structural rapid diagnostics of this type of nanomaterials in the role of functional structures. The advantages of complementarity of Raman data and results of X-ray diffractometry and X-ray photoelectron spectroscopy for establishing a complete picture of the phase and component composition of CZTS NC are shown. Product Description popup.authors popup.nrat_date 2021-12-22 Close