Bandgap bowing and spontaneous ordering in ZnSexTe1−x

Autor:	Pasquale Pavone, Ulrich Rössler, Wolfgang Gebhardt, G. Schötz, A. Naumov, H. Stanzl, K. Wolf, B. Freytag, S. Jilka, S. Lankes
Rok vydání:	1995
Předmět:	Condensed matter physics business.industry Band gap Bowing Chemistry Semiconductor materials Optical measurements General Chemistry Crystal structure Symmetry group Condensed Matter Physics Optics Materials Chemistry Metalorganic vapour phase epitaxy Thin film business
Zdroj:	Solid State Communications. 94:103-106
ISSN:	0038-1098
DOI:	10.1016/0038-1098(95)00035-6
Popis:	We present the results of experimental investigations on bandgap bowing and spontaneous ordering in MOVPE grown ZnSexTe1−x. The bowing parameter of b = 1.40 ± 0.05eV found from different optical measurements on our epilayers is slightly larger than values found earlier from bulk material, indicating the possibility of spontaneous ordering in our samples. Ab-initio calculations for Zn2SeTe in the ordered CuAu- and CuPt-structures lean support to this possibility. In fact X-ray measurements performed on our samples with x = 0.39 and x = 0.54 show peaks, forbidden in the zincblende structure, which give evidence for spontaneous ordering in the CuPt structure.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9514becc921ba6890a54dbdeefe00e1b https://doi.org/10.1016/0038-1098(95)00035-6 Zobrazit plný text záznamu Full Text from ScienceDirect