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Study of Trapping and Recombination In a-Si:H By Means of Infrared Enhancement Spectra of Photoconductivity

  • Wu Wenhao (a1), Qiu Changhua (a1), Zhao Shifu (a1) and Han Daxing (a1)

Abstract

IR re-excitation of non-equilibrium carriers in undoped a-Si:H has been used to probe the profile of the distribution of deep traps. In a dualbeam experiment, after turning off a pump light, the trapped carriers are re-excited by an IR probe light which causes the photoconductivity(PC) to pass through a maximum, σmax, before settling down towards its steady state value, σs. σmax depends on the time interval td between turning off the pump light and turning on the probe light in a manner Δσ=σmaxs∞td-α(T) Based on the multiple trapping (MT) model, the distribution of deep traps has been deduced from the temperature dependences of α(T).

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1. Persans, P.D., Phil. Mag. B 46, 435 (1982).
2. Mackenzie, K.D., LeComber, P.G., Spear, W.E., Phil. Mag. B 46, 377 (1982).
3. Misra, D.S., Singh, V.A., Agarwal, S.C., Solid State Commun. 55, 147 (1985).
4. Goodman, N.B., Phil. Mag. B 45, 407 (1982).
5. Lang, D.V., Cohn, J.D., Harbison, J.P., Phys. Rev. B 25, 5285 (1982).
6. Cohen, J.D., Lang, D.V., Harbison, J.P., Phys. Rev. Lett. 45, 197 (1980).
7. Fritzsche, H., J. non-crystalline Solids, 77–78, 273 (1985).
8. Tiedje, T., Rose, A., Solid State Commun. 37, 49 (1981).
9. Orenstein, J., Kastner, M.A., Phys. Rev. Lett. 46, 1421 (1981).
10. Monroe, D., Kastner, M.A., Phil. Mag. B 47, 605 (1983).
11. Fritzsche, H., Ibaraki, N., Phil. Mag. B 52, 299 (1985).
12. Tiedje, T., Cebulka, J.M., Morel, D.L., Abeles, B., Phys. Rev. Lett. 46, 1425 (1981).
13. Hvam, J.M., Brodsky, M.H., Phys. Rev. Lett. 46, 371 (1981).
14. Changhua, Qiu, Wenhao, Wu, Shifu, Zhao, Daxing, Han, presented at the 1986 MRS Spring Meeting, San Francisco, CA, 1985 (unpublished).
15. Kastner, M.A., Monroe, D., Sol. Energy Mater. 8, 41 (1982).

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