Institute of Applied Physics
5 Academiei str.
MOLDOVA (Rep. of)
phone: +(373) 22 738150
fax: +(373) 22 738149
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.
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