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Project ANCD 19.80013.16.02.01F/BL The growth of the Cu2Zn1-xCdxSnS4 solid solutions and the study of their physico-chemical and physical properties for the design of the solar photoconverters |
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| Type : | International bilateral project, funded by the National Agency for Research and Development of the Republic of Moldova and the State Committee for Science and Technology of the Republic of Belarus |
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| Head : | Ernest Arushanov, acad. ASM, Dr.Sci., prof. |
| Duration : | 2019 – 2020 |
| Division(s) : | Laboratory of Materials for Photovoltaics and Photonics |
The main purpose of this project was to determine the type of chemical interaction in the Сu2ZnSnS4 – Cu2CdSnS4 solid solution system, through different methods of physico-chemical analysis. These include determination of the regions of solubility, and of the optimal regime of the temperatures for syntesis and the growth of Cu2ZnSnS4, Сu2CdSnS4 single crystals and Cu2Zn1-xCdxSnS4 solid solutions, as well as analysis of the main laws for change of physico-chemical, physiscal, optical and electrical properties of these materials.
To achieve the proposed project goal, the following objectives were proposed:
1) Investigation of the phase diagram of the Сu2ZnSnS4 – Cu2CdSnS4 system and determination of the optimal crystal synthesis and growth parameters by melt-oriented crystallization (Bridgman method) and from the gaseous phase (chemical vapor transport method);
2) Compositional and structural characterization of Cu2ZnSnS4, Сu2CdSnS4 single crystals, and of Cu2Zn1-xCdxSnS4 solid solutions using the micro-X-ray-spectral and X-ray analysis;
3) Analysis of the dependence of the elementary cell parameters, density, microdurance and band gap of Cu2Zn1-xCdxSnS4 solid solutions from the chemical composition.
Study of photoluminescence and Raman spectra, as well as of electrical transport properties of the materials mentioned above.