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Light-induced processes in a-Si:H films at elevated temperatures

  • Amorphous, Glassy, and Porous Semiconductors
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Abstract

At temperatures T>120 °C the kinetics of the dark conductivity (σ d) of undoped and borondoped a-Si:H films during and after the cessation of illumination is observed to be nonmonotonic, with fast and slow processes of variation of σ d of opposite sign. A fast or slow σ d relaxation process described by a stretched exponential function can be isolated by varying the duration and intensity of illumination or the film temperature. The nonmonotonic relaxation of σ d is described by a sum of two stretched exponentials, whose parameters τ and β depend on the film characteristics and on the temperature, exposure time, and intensity of illumination. The nature of the nonmonotonic relaxation is discussed.

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Authors and Affiliations

  1. Physics Department, M. V. Lomonosov Moscow State University, 119899, Moscow, Russia

    I. A. Kurova, É. V. Larina, N. N. Ormont & D. V. Senashenko

Authors
  1. I. A. Kurova
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  2. É. V. Larina
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  3. N. N. Ormont
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  4. D. V. Senashenko
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Additional information

Fiz. Tekh. Poluprovodn. 31, 1455–1459 (December 1997)

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Kurova, I.A., Larina, É.V., Ormont, N.N. et al. Light-induced processes in a-Si:H films at elevated temperatures. Semiconductors 31, 1257–1260 (1997). https://doi.org/10.1134/1.1187307

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  • DOI: https://doi.org/10.1134/1.1187307

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