Electron traps in semiconducting polymers: Exponential versus Gaussian trap distribution

H. T. Nicolai, M. M. Mandoc, and P. W. M. Blom
Phys. Rev. B 83, 195204 – Published 4 May 2011

Abstract

The low electron currents in poly(dialkoxy-p-phenylene vinylene) (PPV) derivatives and their steep voltage dependence are generally explained by trap-limited conduction in the presence of an exponential trap distribution. Here we demonstrate that the electron transport of several PPV derivatives can also be well described with a trap distribution that is Gaussianly distributed within the band gap. In contrast to the exponential distribution the trap-limited electron currents can now be modeled using the same Gaussian trap distribution for the various PPV derivatives.

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  • Received 25 January 2011

DOI:https://doi.org/10.1103/PhysRevB.83.195204

©2011 American Physical Society

Authors & Affiliations

H. T. Nicolai1, M. M. Mandoc1,*, and P. W. M. Blom1,2

  • 1Molecular Electronics, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, NL-9747 AG, Groningen, The Netherlands
  • 2TNO/Holst Centre, High Tech Campus 31, NL-5605 KN Eindhoven, The Netherlands

  • *Present address: Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.

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Vol. 83, Iss. 19 — 15 May 2011

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