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Millisecond kinetics of photo-darkening/bleaching in xGe45Se55-(1-x)As45Se55 chalcogenide amorphous films.
- Source :
-
Journal of Applied Physics . Sep2012, Vol. 112 Issue 5, p053105. 4p. - Publication Year :
- 2012
-
Abstract
- Photosensitivity of thermally evaporated chalcogenide amorphous films of xGe45Se55-(1-x)As45Se55 (x = 0, 0.25, 0.5, 0.75, 1) composition is investigated when exposed to the laser light of 660 nm wavelength. The photo-induced effects transition from photodarkening (PD) to photobleaching (PB) as Ge45Se55 x increases from 0 to 1. The degree of PB correlates with the concentration of Ge-Ge homopolar bonds. The kinetics of PD and PB can be well described by a stretched exponential function. The dynamic response of PB is much faster than that of PD films in the present glass system. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 112
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 80228782
- Full Text :
- https://doi.org/10.1063/1.4752027