Time Dependence of the Metastable, Optically-Induced ESR in a-Si:H

MRS Online Proceedings Library volume 70, pages225–229(1986)Cite this article

Abstract

The occurrence of optically-induced, metastable changes in the paramagnetism in films of a-Si:H is well known. The effect was first observed with white light in powdered samples, but recent experiments with both white and monochromatic light incident on films on substrates have observed a similar effect. This optically-induced ESR appears to be stable at temperatures ≤ 400 K. Typical inducing curves for samples with initial dark spin densities ns > 1016 spins/cm3 approach a power law behavior (ns ∼ t1/3) at long times. However, when the dark spin density is less than 1016 spins/cm3, the samples exhibit an inducing curve (on a log-log scale) with a continuously decreasing slope. The curve does not exhibit a unique power law behavior over an extended range of time and is at all times ≤ t1/3.

This is a preview of subscription content, access via your institution.

Access options

Buy single article

Instant access to the full article PDF.

US$ 39.95

Tax calculation will be finalised during checkout.

References

  1. 1.

    H. Dersch, J. Stuke and J. Beichler, Appl. Phys. Lett. 38, 456 (1981).

    CAS  Article  Google Scholar 

  2. 2.

    D.L. Staebler and C.R. Wronski, Appl. Phys. Lett. 31, 292 (1977); J. Appl. Phys. 51, 3262 (1980).

    CAS  Article  Google Scholar 

  3. 3.

    C. Lee, W.D. Ohlsen, P.C. Taylor, H.S. Ullal and G.P. Ceasar, in AIP Conf. Proc. 120, 205 (1984).

    CAS  Article  Google Scholar 

  4. 4.

    M. Stutzmann, W.B. Jackson and C.C. Tsai, in AIP Conf. Proc. 120, 213 (1984); Phys. Rev. B32, 23 (1985).

    CAS  Article  Google Scholar 

  5. 5.

    H. Yokomichi, M. Kumeda, A. Morimoto and T. Shimizu, Jpn. J. Appl. Phys. 24, L569 (1985).

    Article  Google Scholar 

  6. 6.

    M. Kumeda, M. Uno, A. Morimoto and T. Shimizu, Jpn. J. Appl. Phys. 25 (1985), in press.

  7. 7.

    M. Gal, J.M. Viner, P.C. Taylor and R.D. Wieting, Phys. Rev. B31, 4060 (1985).

    Article  Google Scholar 

Download references

Author information

Affiliations

  1. Department of Physics, University of Utah, Salt Lake City, UT, 84112, USA

    C. Lee, W. D. Ohlsen & P. C. Taylor

Authors
  1. C. Lee
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. W. D. Ohlsen
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. P. C. Taylor
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to C. Lee.

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Lee, C., Ohlsen, W.D. & Taylor, P.C. Time Dependence of the Metastable, Optically-Induced ESR in a-Si:H. MRS Online Proceedings Library 70, 225–229 (1986). https://doi.org/10.1557/PROC-70-225

Download citation