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Determination Of Trap Parameters From Photocurrent Decay Measurements: Metal-Free Phthalocyanine Films

  • I. Zhivkov
  • S. Nešpůrek
  • J. Sworakowski
Part of the NATO Science Series book series (NAII, volume 80)

Abstract

The energy distribution of traps in gap samples of thin vacuum-evaporated metal- free phthalocyanine (H2Pc) films was determined from measurements of photocurrent decays performed at several temperatures, in a nitrogen atmosphere. The parameters of the traps were determined using a straightforward method of the analysis of a first-order process, with distributed parameters. It was found that the photocurrents are controlled by a narrow distribution of shallow traps peaking at about 0.2 eV, with a distribution width of about 0.015 eV and a very low effective attempt-to-escape factor.

Keywords

Shallow Trap Trap Parameter Relaxation Current Photocurrent Decay Photocurrent Relaxation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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    Zhivkov, I., Nešpůrek, S., Danev, G. and Schauer, F., to be published.Google Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2002

Authors and Affiliations

  • I. Zhivkov
    • 1
    • 2
  • S. Nešpůrek
    • 2
  • J. Sworakowski
    • 3
  1. 1.Central Laboratory of PhotoprocessesBulgarian Academy of SciencesSofiaBulgaria
  2. 2.Institute ofMacromolecular ChemistryAcademy of Sciences of the Czech RepublicPrague 6Czech Republic
  3. 3.Institute of Physical and Theoretical ChemistryTechnical University of WroclawWroclawPoland

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