Effect of isomorphic atom substitution on the lattice parameters and the optical absorption edge of TlGaSe2-TlInSe2 mixed crystals

Date

2006-05-01

Author

Gasanly, N. M.

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The variation of lattice parameters of TlGaSe2-TlInSe2 mixed crystals with composition have been investigated by using of X-ray diffraction technique. For the mixed crystals studied, a structural phase transition (monoclinic to tetragonal) due to atom substitution is observed when the sum of the tetrahedral covalent radii of the Ga(In) and the Se atoms in Ga(In)Se-4 tetrahedra reaches a critical value of about 0.254 nm. From transmission and reflection measurements, the compositional dependence of the indirect energy band gap was revealed.

Subject Keywords

X-Ray Diffraction, Optical Absorption, Mixed Crystals

URI

https://hdl.handle.net/11511/63781

Journal

JOURNAL OF THE KOREAN PHYSICAL SOCIETY

Collections

Department of Physics, Article

Citation Formats

N. M. Gasanly, “Effect of isomorphic atom substitution on the lattice parameters and the optical absorption edge of TlGaSe2-TlInSe2 mixed crystals,” JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 48, no. 5, pp. 914–918, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/63781.