Hostname: page-component-78c5997874-j824f Total loading time: 0 Render date: 2024-11-16T20:20:24.075Z Has data issue: false hasContentIssue false
  • English
  • Français

The First Fifty Billion Nanoseconds of Electron Photocarrier Evolution in Undoped a-Si:H

Published online by Cambridge University Press:  25 February 2011

Homer Antoniadis  and
E.A. Schiff
Homer Antoniadis
Affiliation:
Department of Physics, Syracuse University, Syracuse, New York 13244–1130
E.A. Schiff
Affiliation:
Department of Physics, Syracuse University, Syracuse, New York 13244–1130
Get access

Abstract

The drift of electrons generated by a 3 ns illumination impulse was studied in several undoped a-Si:H specimens by using transient photocharge measurements from 10 ns to 50 sec. The transients show four stages of evolution: band transport, deep-trapping and subsequent re-emission, and recombination. From the temperature dependence of the emission time we estimated the mean energy of the trap distribution and the attempt-to-escape frequency associated with this trap to be 0.6 eV below the conduction band and 5×1012 sec−1 respectively; this trap has been identified in previous work with the D-center found in electron spin resonance. In addition the data resolve the two orders of magnitute discrepancy between mobility-lifetime estimates from earlier charge-collection experiments and from steady-state photoconductivity.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 192: Symposium O – Amorphous Silicon Technology - 1990 , 1990 , 293
Copyright
Copyright © Materials Research Society 1990

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

Schiff, E. A., Phil. Mag. Lett., 55, 87, (1987) and references therein.Google Scholar
2. Mackenzie, K. D. and Paul, W., J. Non-Crystal line Solids, 97–98, 1055, (1987).Google Scholar
3. Spear, W., J. Non-Crystalline Solids, 59–60, 1, (1983).Google Scholar
4. Street, R. A., Phil. Mag. B, 49, L15, (1984) and references therein.Google Scholar
5. Hotaling, S. P., Antoniadis, H. and Schiff, E. A., Solar Cells, 27, 357, (1989).Google Scholar
6. Hotaling, S. P., Antoniadis, H. and Schiff, E. A., J. Non-Crystalline Solids, 114, 420, (1990).Google Scholar
7. Antoniadis, H. and Schiff, E. A., to be published.Google Scholar
8. Carasco, F. and Spear, W., Phil. Mag. B, 47, 495, (1983).Google Scholar
9. Scher, H., in Mort, J. and Pai, D. M. (eds.) Photoconductivity and Related Phenomena, Elsevier, Amsterdam, 1976, p.71.Google Scholar
10. Tiedje, T., in Joannopoulos, J. D. and Loucovsky, G. (eds.), Hydrogenated Amorphous Silicon, Vol II, Springer-Verlag, New York, 1984, p.261.Google Scholar
11. Pandya, R., Schiff, E. A. and Conrad, K. A., J. Non-Crystalline Solids, 66, 193, (1984).Google Scholar
12. Ritter, D., Weiser, K. and Zeldov, E., Jour. Appl. Phys., 62, 4563, (1987).Google Scholar