Harshvardhan, K. Solomon ; Rajagopalan, S. ; Malhotra, L. K. ; Chopra, K. L. (1981) On the origin of photocontraction effect in amorphous chalcogenide films Solid State Communications, 40 (4). pp. 387-390. ISSN 0038-1098
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/003810...
Related URL: http://dx.doi.org/10.1016/0038-1098(81)90844-9
Abstract
Large photocontraction of up to 26% has been observed in some chalcogenide films. Conditions necessary for the occurrence of large photocontraction are indicated to be: ability to form a glass, high bond ionicity, strong electron-phonon coupling, low density of the bulk material, and a large density difference between the bulk and the thin-film. These studies suggest that contraction (densification) is due to the mechanical collapse of the columns resulting from the large internal stresses caused by the interaction of the photogenerated carriers and the charged dangling bonds.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 22941 |
| Deposited On: | 25 Nov 2010 13:48 |
| Last Modified: | 28 May 2011 05:29 |
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