| Title |
|
|
|
Photo-induced shifts in the optical gap of a-Se thin films
| |
| Author |
|
|
|
| |
| Abstract |
|
|
|
| Amorphous Se films were prepared by thermal evaporation. The photo-darkening induced by illumination with white light at various temperatures (80 K, 111 K, 146 K and 188 K, resp.) and with monochromatic light with wavelength lambda = 550 nm (80 K) was studied. Photoinduced bleaching of previously-darkened samples (X = 550 nm, 80 K) was observed at 80 K induced by illumination using light with lambda = 488 nm, 671 nm, 707 nm and 768 run, resp. It is suggested that the overall photo-darkening process is most probably a kind of self-limiting process. |
| |
| Language |
|
|
|
English
| |
| Source (journal) |
|
|
|
Journal of optoelectronics and advanced materials. - Bucharest | |
| Publication |
|
|
|
Bucharest : 2002
| |
| ISSN |
|
|
|
1454-4164
| |
| Volume/pages |
|
|
|
4:3(2002), p. 785-791
| |
| ISI |
|
|
|
000177387200037
| |
| Full text (publisher's version - intranet only) |
|
|
| | |
|