Optical Properties of GaTe-ZnTe Nanolamellae Composite. (December 2015)

• Record Type: Journal Article
• Authors: Spalatu, N.; Evtodiev, I.; Caraman, I.; Evtodiev, S.; Rotaru, I.; Caraman, M.; Untila, D.
• Is Part Of: Energy procedia. Volume 84(2015)
• Page Start: 176
• Page End: 182
• Publication Date: 2015-12
• Subjects: GaTe -- Zn -- heat treatment -- ZnTe -- crystalline structure -- absorbance -- photoluminescence -- crystallites; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2015.12.311
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: A material composed of GaTe and ZnTe crystallites with average diameter of ∼ 37 nm and 68 nm respectively was obtained by heat treatment at the temperature of 1000K and 1073K of GaTe plates in Zn vapour for 24 hours. The absorbance spectra of composite material obtained at 1073K and that calculated from diffuse reflection using the Kubelka-Munk formula contains the bands characteristic for light absorption in ZnTe and GaTe crystallites. The photoluminescence spectrum of composite material at the temperature of 80K is composed to the excitonic band in GaTe and impurity bands of ZnTe crystallites.