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Photovoltaic Effect in Thin Ferroelectric Films

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Abstract

Polarization-dependent photovoltaic currents are observed in continuously illuminated ferroelectric thin films under conditions of polarization reversal. Following reversal, an initial current rapidly decays to an essentially steady current, which then decays slowly with the current decreasing in proportion to the logarithm of elapsed time. These polarization-dependent currents are attributed to the action of internal fields on photocarriers where the fields result from the incomplete screening of the polarization field.

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Acknowledgements

We thank Dr. S. Bemacki of Raytheon Corporation and Dr. S. W. Dey of Arizona State University for providing films used in this study.

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Authors and Affiliations

  1. Harry Diamond Laboratories, U.S. Army LABCOM, Adelphi, MD, 20783, USA

    Philip S. Brody & B. J. Rod

  2. National Institute of Standards and Technology, Gaithersburg, MD, 20899, USA

    L. P. Cook & P. K. Schenck

Authors
  1. Philip S. Brody
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  2. B. J. Rod
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  3. L. P. Cook
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  4. P. K. Schenck
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Brody, P.S., Rod, B.J., Cook, L.P. et al. Photovoltaic Effect in Thin Ferroelectric Films. MRS Online Proceedings Library 243, 27–31 (1991). https://doi.org/10.1557/PROC-243-27

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