Crystal Research and Technology
Cryst. Res. Technol. 39, 301 (2004) - Abstract -

Preparation and investigation of (CuInSe2)x(2ZnSe)1-x and (CuInTe2)x(2ZnTe)1-x solid solution crystals

I. V. Bodnar, V. F. Gremenok*, W. Schmitz**, K. Bente**, and Th. Doering**

Belarusian State University of Informatics and Radioelectronics, Department of Chemistry, P. Brovka, str. 6, 220027 Minsk, Belarus
*Institute of Solid State and Semiconductor Physics, National Academy of Sciences of Belarus, P. Brovka, str. 17, 220072 Minsk, Belarus
**Institut für Mineralogie, Kristallographie und Materialwissenschaft, Universität Leipzig, Scharnhorstrasse 20, 04275 Leipzig, Germany

Keywords solid solution crystals, phase transition, composition dependence, lattice constants, transmission spectra, optical band gap
PACS 84.60.Jt, 42.70.Qs, 81.40.Ef
DOI 10.1002/crat.200310186

The (CuInSe2)x(2ZnSe)1-x and (CuInTe2)x(2ZnTe)1-x solid solution crystals prepared by Bridgman method and chemical vapor transport have been studied. The nature of the crystalline phases, the local structure homogeneity and composition of these materials have been investigated by X-ray diffraction (XRD) and Electron Probe Microanalysis (EPMA) methods. The analysis revealed the presence of chalcopyrite-sphalerite phase transition between 0.6 <= x <= 0.7. Lattice constants, value of σ position parameter and bond length between atoms were also calculated. It was found that the lattice parameters exhibit a linear dependence versus composition. The transmission spectra of solid solution crystals in the region of the main absorption edge were studied. It was established that the optical band gap of these materials changes non-linearly with the x composition.



The full text of this paper in pdf-Format:

If you came directly to this page, click this symbol to go to the homepage of CRT.