A NANOMETER-SCALE MECHANISM FOR THE REVERSIBLE PHOTOSTRUCTURAL CHANGEIN AMORPHOUS CHALCOGENIDES

Authors
KOLOBOV AV OYANAGI H ROY A TANAKA K
Citation
Av. Kolobov et al., A NANOMETER-SCALE MECHANISM FOR THE REVERSIBLE PHOTOSTRUCTURAL CHANGEIN AMORPHOUS CHALCOGENIDES, Journal of non-crystalline solids, 234, 1998, pp. 80-85
Citations number
20
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of non-crystalline solids → ACNP
ISSN journal
00223093
Volume
234
Year of publication
1998
Pages
80 - 85
Database
ISI
SICI code
0022-3093(1998)234:<80:ANMFTR>2.0.ZU;2-R
Abstract
The results of in situ extended X-ray absorption fine structure (EXAFS ) and Raman scattering studies of reversible photostructural change in amorphous selenium and As2Se3 are reported. The EXAFS results provide evidence for the dynamical formation of interchain (interlayer) Se-Se bonds in the photoexcited state which is further confirmed by Raman s cattering experiments. A nanometer scale mechanism for the photostruct ural change is discussed, based on these experimental data. (C) 1998 E lsevier Science B.V. All rights reserved.