PHOTOINDUCED SOFTENING AND HARDENING IN GE-AS-S AMORPHOUS FILMS

Authors
POPESCU M SAVA F LORINCZI A SKORDEVA E KOCH PJ BRADACZEK H
Citation
M. Popescu et al., PHOTOINDUCED SOFTENING AND HARDENING IN GE-AS-S AMORPHOUS FILMS, Journal of non-crystalline solids, 230, 1998, pp. 719-722
Citations number
6
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of non-crystalline solids → ACNP
ISSN journal
00223093
Volume
230
Year of publication
1998
Part
B
Pages
719 - 722
Database
ISI
SICI code
0022-3093(1998)230:<719:PSAHIG>2.0.ZU;2-O
Abstract
Hardness, X-ray diffraction and transmission as well as infrared refle ction measurements on virgin and ultraviolet (UV)-irradiated amorphous films of the GexAs40-xS60 system have been performed. The UV light in duces film softening for x < 19 and film hardening for x > 19. The str ucture remains amorphous but the distance characteristic of medium ran ge order decreases for x < 19 and increases for x > 19. Photo-contract ion of the films (up to similar to 12%) has been revealed from IR spec tra and X-ray transmission experiments. A main effect of UV light is t he release of sulphur. (C) 1998 Elsevier Science B.V. All rights reser ved.