Sebastian , P. J. and Sivaramakrishnan , V. (1990) INVESTIGATION OF OXYGEN-CHEMISORPTION ON THE SURFACE OF CDSE0.8TE0.2 THIN-FILMS BY X-RAY PHOTOELECTRON-SPECTROSCOPY AND TRANSMISSION ELECTRON-MICROSCOPY. THIN SOLID FILMS, 189 (1). pp. 183-191. ISSN 0040-6090
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Abstract
The results of oxygen chemisorption studies performed on the surface of CdSe0.8Te0.2 thin films by X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) are reported. Films deposited at various substrate temperatures, differing deposition rates and of different thicknesses exhibited instability in film resistance with time (aging) when exposed to oxygen and atmosphere. An oxygen chemisorption model is used to explain the aging of the films in oxygen and atmosphere. The increased aging exhibited by films deposited at low rates and low substrate temperatures may be attributed to the greater number of selenium vacancies available for oxygen chemisorption. This was further supported by XPS and TEM of the films.
| Item Type: | Article |
|---|---|
| Subjects: | Physical Science > Nanophysics Physical Science > Nano objects Material Science > Nanochemistry Material Science > Nanostructured materials |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Physics Faculty of Engineering, Science and Mathematics > School of Chemistry |
| ID Code: | 7107 |
| Deposited By: | JNCASR |
| Deposited On: | 02 Sep 2009 11:32 |
| Last Modified: | 02 Sep 2009 11:32 |
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