Growing crystals and studying structure and electronic properties of Cu<sub>2</sub>ZnGe(S<sub>х</sub>Se<sub>1-x</sub>)<sub>4</sub> compositions.

The chemical vapor transfer method is a practically significant method of atom-by-atom transfer, arrangement and growth of material, which allows the synthesis of highly perfect structures with well-controlled dimensions at sufficiently low temperatures and high purity. 2 Materials and methods 2.1 Singe crystals growth Single crystals of Cu 2 ZnGeS 4 , Cu 2 ZnGeSe 4 and Cu 2 ZnGeS 4х Se 4(1-х) solid solutions were grown from preliminary synthesized polycrystalline ingots by chemical vapor transport method in a vertical single-zone furnace.

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