Hostname: page-component-7bb8b95d7b-pwrkn Total loading time: 0 Render date: 2024-09-13T07:10:21.316Z Has data issue: false hasContentIssue false

Hydrogen Distributions and Model Lineshapes of ESR Signals of Dangling Bonds in a-Si:H

Published online by Cambridge University Press:  17 March 2011

P. A. Fedders*
Affiliation:
Department of Physics, Washington University, St. Louis, Mo 63130
Get access

Abstract

For many years it has been assumed widely that hydrogen is involved in some way in the formation of light induced defects. However recently some doubt has been cast on this because of experimental evidence that there is little H near light induced dangling bonds. In this paper we present a number of model calculations comparing ESR spectra of dangling bonds with and without correlations with H positions. The above models include different distributions of H and correlations or anti correlations of nearby H. In all cases the spectra are compared to those with no correlations or clustering. Our results coupled with published experimental data strongly suggest that dangling bonds are not correlated positively with the presence of nearby H and, in fact, it appears that light induced dangling bonds are negatively correlated with nearby H.

Type
Research Article
Copyright
Copyright © Materials Research Society 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1.For a summary see H. Fritzsche in /it Amorphous and Microcrystalline Silicon Technology-1997 edited by Schiff, E. A., Hack, M., Wagner, S., Schropp, R., and Shimizu, I., MRS Symposium Proceedings No. 467 (MRS, Pittsburgh 1997), page 19.Google Scholar
2. Yamasaki, Satoshi and Isoya, Junichi, J. Non-Cryst. Solids 164–166, 169 (1993).Google Scholar
3. Isoya, J., Yamasaki, S., Okushi, H., Matsuda, A., and Tanaka, K., Phys. Rev. B 47, 7013 (1993).10.1103/PhysRevB.47.7013Google Scholar
4. Stutzmann, Martin, Brandt, Martin S., and Bayerl, Martin W., J. Non-Cryst. Solids 266–269, 1 (2000).10.1016/S0022-3093(99)00871-6Google Scholar
5. Brandt, M. S. and Stutzmann, M., J. Non-Cryst. Solid 164–166 547 (1993).10.1016/0022-3093(93)90610-AGoogle Scholar