Title :
Photoluminescence study of α-ZnAl2S4 single crystals
Author :
Ursaki, V. ; Boldurescu, V. ; Burlakov, I. ; Syrbu, N. ; Nyari, T.
Author_Institution :
Inst. of Appl. Phys., Acad. of Sci. of Moldova, Chisinau, Moldova
Abstract :
Photoluminescence (PL) spectra of ZnAl2S4 crystals with spinel structure were studied under the extrinsic excitation. The PL bands at 0.98 eV and 1.34 eV are suggested to be caused by native defects; while the bands at 1.61 eV and 2.0 eV are associated with the Cr and Mn impurities respectively. Mn2+ intracentral transitions were investigated by the PL excitation spectroscopy
Keywords :
aluminium compounds; chromium; manganese; photoluminescence; ternary semiconductors; wide band gap semiconductors; zinc compounds; 0.98 eV; 1.34 eV; 1.61 eV; 2.0 eV; PL excitation spectroscopy; ZnAl2S4:Cr; ZnAl2S4:Mn; extrinsic excitation; intracentral transitions; native defects; photoluminescence; spinel structure; Argon; Crystallization; Crystals; Laser excitation; Laser mode locking; Lattices; Photoluminescence; Spectroscopy; Temperature; X-ray lasers;
Conference_Titel :
Semiconductor Conference, 2000. CAS 2000 Proceedings. International
Conference_Location :
Sinaia
Print_ISBN :
0-7803-5885-6
DOI :
10.1109/SMICND.2000.890197
