Raman scattering and photoluminescence of mixed crystals

Autor:	Z. P. Wang, Z M Zhu, Iam Keong Sou, N Z Liu, W. K. Ge, Guohua Li, H X Han
Rok vydání:	1998
Předmět:	Photoluminescence Chemistry Band gap Exciton Analytical chemistry Condensed Matter Physics Spectral line symbols.namesake symbols General Materials Science Spontaneous emission Atomic physics Luminescence Raman spectroscopy Raman scattering
Zdroj:	Journal of Physics: Condensed Matter. 10:4119-4129
ISSN:	1361-648X 0953-8984
DOI:	10.1088/0953-8984/10/18/021
Popis:	We have investigated the Raman scattering and the photoluminescence (PL) of ZnSxTe1-x mixed crystals grown by MBE, covering the entire composition range (0 less than or equal to x < 1). The results of Raman studies show that the ZnSxTe1-x mixed crystals display two-mode behaviour. In addition, photoluminescence spectra obtained in backscattering and edge-emission geometries, reflectivity spectra and the: temperature dependence of the photoluminescence of ZnSxTe1-x have been employed to find out the origin of PL emissions in ZnSxTe1-x with different x values. The results indicate that emission bands, for the samples with small x values, can be related to the band gap transitions or a shallow-level emission centre, while as x approaches 1, they are designated to strong radiative recombination of Te isoelectronic centres (IECs).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::13ba6dba6b26e34aea07ac4f820a26a3 https://doi.org/10.1088/0953-8984/10/18/021 Zobrazit plný text záznamu