Title: Photoreflectance and Photoluminescence Studies of CuAl<sub>x</sub>Ga<sub>1-x</sub>Se<sub>2</sub> Alloys
Abstract: Photoreflectance (PR) and photoluminescence (PL) measurements have been carried out at 77 K on single crystals of CuAl x Ga 1- x Se 2 alloys grown by the chemical vapor transport method. Energies of excitons associated with uppermost valence bands have been determined as a function of composition based on the analysis of PR spectra. Spin-orbit and crystal field splittings have been obtained. PL spectra exhibited an exciton-related line, a peak due to free-to-acceptor transition and a deep level emission band. These PL lines and peaks are discussed in terms of the compositional dependence of the exciton energy.
Publication Year: 1993
Publication Date: 1993-09-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 22
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot