Bhattacharyya, Somnath ; Rastogi, A. ; Bhat, S. V. ; Rao, K. S. R. K. ; Subramanyam, S. V. ; Kanjilal, D. (1998) Electron spin resonance study on high energy heavy ion irradiated conducting carbon films Solid State Communications, 105 (8). pp. 543-546. ISSN 0038-1098
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0038-1098(97)10180-6
Abstract
Amorphous conducting carbon films are prepared by plasma assisted chemical vapour deposition. These films are irradiated by high energy (170 MeV) heavy ion (127I+13) beam. As a result, the conductivity of the film is decreased by two to three orders of magnitude and a gap is created in its electronic structure. Two paramagnetic centres giving rise to the electron spin resonance (ESR) signals are observed in the irradiated films compared to a single one in the unirradiated film. Also the dependence of the ESR signal width and intensity on temperature and on microwave power is different in the irradiated films. Ion irradiation creates metastable states and carbon complexes in the films. ESR spectra throw some light on the mechanism of the structural change.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | A. Amorphous Carbon; B. Ion Irradiation; C. Electron Spin Resonance; D. Impurities in Semiconductors; E. Photoluminescence |
| ID Code: | 51452 |
| Deposited On: | 28 Jul 2011 11:41 |
| Last Modified: | 13 Jul 2012 11:59 |
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