Title :
Photodarkening of amorphous chalcogenide films doped by metal impurities
Author :
Iovu, M. ; Shutov, S. ; Rebeja, S. ; Colomeyko, E. ; Popescu, M.
Author_Institution :
Center of Optoelectron., Chisinau, Moldova
Abstract :
The relaxation of photodarkening in amorphous As-Se films doped by Sn, Mn, Sm and Dy was investigated. The addition of metals diminishes the photodarkening effect and the thermal photobleaching effect, especially in the case of dysprosium modifier. Metal doping contributes to the stabilization of glassy matrix with respect to light exposure and thermal treatment
Keywords :
arsenic compounds; chalcogenide glasses; dysprosium; glass structure; heat treatment; manganese; photochromism; samarium; semiconductor thin films; tin; AsSe:Sn,Mn,Sm,Dy; Dy; Mn; Sm; Sn; amorphous As-Se films; amorphous chalcogenide films; dysprosium modifier; glassy matrix; light exposure; metal impurities; photodarkening; thermal photobleaching effect; thermal treatment; Absorption; Amorphous materials; Annealing; Glass; Impurities; Optical films; Optical filters; Photochromism; Physics; Tin;
Conference_Titel :
Semiconductor Conference, 1999. CAS '99 Proceedings. 1999 International
Conference_Location :
Sinaia
Print_ISBN :
0-7803-5139-8
DOI :
10.1109/SMICND.1999.810537
