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Is Thermalization Due to Electronic Self-Trapplng?

Published online by Cambridge University Press:  15 February 2011

Mathieu Kemp*
Affiliation:
Department of Engineering Physics, Ecole Polytechnique de Montreal, Montreal, Canada H3C- 3A7
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Abstract

The interpretation that the red shift of the a-Si:H photoluminescence spectrum is due to carrier hopping is incompatible with Monte-Carlo simulations. We suggest that thermalization is instead the result of slow, gradual, electronic self-trapping. We show how this model reconciles the narrowness of the photoluminescence lifetime distribution with the observed red-shift of the energy spectrum.

Type
Research Article
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

1. Street, R.A., in Hydrogenated Amorphous Silicon: Semiconductor and Semimetals, Vol. 21B, (Pankove, J.I. editor, Academic Press, New York, 1984), p. 197.Google Scholar
2. Shklovskii, B.I., Fritzsche, H., Baranovskii, S.D., Phys. Rev. Lett. 69, 2989 (1989).Google Scholar
3. Wilson, B.A. and Kerwin, T.P., Phys. Rev. B 25, 5276 (1982).Google Scholar
4. Stachowitz, R., Schubert, M., Fuhs, W., J. Non-Crystalline Solids 164–166, 583 (1993).Google Scholar
5. Bort, M., Fuhs, W., Liedtke, S., Stachowitz, R., Phil. Mag. Lett. 64, 227 (1991).Google Scholar
6. Searle, T.M., Hopkinson, M., Edmeades, M., Kalem, S., Austin, L.G., Gibson, R.A., in Disordered Semiconductors (Kastner, M.A., Thomas, G.A. and Ovshinsky, S.R. editors, 1987), p. 357.Google Scholar
7. Ambros, S., Carius, R., Wagner, H., J. Non-Crystalline Solids 137–138, 555 (1991).Google Scholar
8. Kemp, M. and Silver, M., Phil. Mag. Lett. 66, 169 (1992).Google Scholar
9. Kemp, M., to be published in J. Non-Crystalline Solids, (1995).Google Scholar
10. Cohen, J.D., Leen, T.M., Rasmussen, R.J., Phys. Rev. Lett. 69, 3358 (1992).Google Scholar
11. Kemp, M. and Silver, M., J. Non-Crystalline Solids 141, 88 (1992).Google Scholar
12. Hong, K.M., Noolandi, J., Street, R.A., Phys. Rev. B 23, 2967 (1981).Google Scholar
13. Collins, R.W. and Paul, W., Phys. Rev. B 25, 2611 (1982).Google Scholar
14. Street, R.A., Solid-State Comm. 34, 157 (1980).Google Scholar