Electronic band gap of Zn2x(CuIn)1−xX2 solid solution series (X=S, Se, Te)

Autor:	Th. Doering, Susan Schorr, D. Spemann, V. Riede
Rok vydání:	2006
Předmět:	Condensed matter physics Spinodal decomposition Chemistry Band gap Mechanical Engineering Metals and Alloys Analytical chemistry Tetragonal crystal system Mechanics of Materials Materials Chemistry Diffuse reflection Ternary operation Electronic band structure Chemical composition Solid solution
Zdroj:	Journal of Alloys and Compounds. 414:26-30
ISSN:	0925-8388
Popis:	The Zn 2 x (CuIn) 1− x X 2 solid solution series with X = S, Se and Te have been investigated concerning variation of the band gap E g with the chemical composition, especially, with regard to the two-phase field (miscibility gap) occuring in all three systems. The band gap E g was determined by diffuse reflection on powder samples of the quaternary alloys. A highly non-linear dependence of E g on the chemical composition was found, which may be caused by the repulsive interactions of Cu3d and anion 3p states. Moreover, the E g value of the ternary end member of the solid solution series is even reached in a composition range x ∼ 0.45 (X = S), x ∼ 0.4 (X = Se) and x ∼ 0.3 (X = Te). This is due to a nearly constant band gap within the small single-phase tetragonal region (0 ≤ x
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::af5a2600fe45b2854cfcb96f1d74987f https://doi.org/10.1016/j.jallcom.2005.07.014 Zobrazit plný text záznamu Full Text from ScienceDirect