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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
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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
, pp. 914–918, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/63781.