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Information × Registration Number 0220U103576, 0115U002227 , R & D reports Title Search for new binary and ternary compounds based on CdTe with improved performance popup.stage_title Head Fochuk Petro M, Доктор хімічних наук Registration Date 22-10-2020 Organization Yuriy Fedkovych Chernivtsi National University popup.description2  The object of research is the influence of alloys and growing conditions on the properties of semiconductor crystals. The aim of the study is to find new binary and ternary compounds based on CdTe with improved characteristics Research methods - spectrophotometry, differential thermal analysis, Hall method, dark field microscopy, scanning electron microscopy, statistical analysis and modeling. The "dry zone" method (MSZ) developed by us with its slow movement along the ampoule with the material determines the effective purification of CdTe from small, fully compensated acceptors, which is confirmed by the analysis of temperature dependences of the Hall mobility of holes. Based on measurements of high-temperature electrical characteristics of the sample composition Cd0.75Mn0.20Zn0.05Te found that the equilibrium of point defects in the crystal is established when heated above 600 ° C, and in the temperature range from 400 - 900 ° C the conductivity of the sample increases by 4 orders of magnitude, and the concentration of charge carriers by 3.5. It is established that the nature of zinc complexes in the precursor affects the structure of the obtained Cd (Zn) Te nanocrystals. In contrast to zinc aqua complexes, the use of zinc thioglycolate leads to the growth of the ZnS shell and the formation of nanocrystals of the core / CdTe / ZnS type with the displacement of the PL peak in the long-wavelength region. Product Description popup.authors Kopach Oleh V Solodin Serhii V Fochuk Petro M Khalavka Yurii B popup.nrat_date 2021-03-17 Close