PHOTOLUMINESCENCE OF ZN(SETE) ANNEALED PHOSPHORS

Authors
VALDNA V MELLIKOV E MERE A
Citation
V. Valdna et al., PHOTOLUMINESCENCE OF ZN(SETE) ANNEALED PHOSPHORS, Physica scripta. T, T69, 1997, pp. 312-314
Citations number
19
Categorie Soggetti
Physics
Journal title
Physica scripta. T → ACNP
ISSN journal
02811847
Volume
T69
Year of publication
1997
Pages
312 - 314
Database
ISI
SICI code
0281-1847(1997)T69:<312:POZAP>2.0.ZU;2-N
Abstract
The quenching mechanism of the self-activated (SA) and Cu-Cl photolumi nescence (PL) bands and 1.05 eV PL band in Zn(SeTe) solid solutions ar e investigated. It is supposed that SA and Cu-Cl PL bands in ZnTe-rich Zn(SeTe) solid solutions are quenched due to the complex defects TeiC lTe and Te(i)2Cl(Te), which formation decrease the VZnClTe and single Cl-Te concentration. This assumption is confirmed experimentally. By a nnealing under Zn vapour pressure the intensity of SA and Cu-Cl PL ban ds in ZnTe-rich Zn(SeTe) solid solutions are restored It is supposed t hat 1.05 eV PL band in ZnTe is formed due to a Te excess in ZnTe and t he V-Te-Te-i pair is proposed for this band.