Dispersive Hole Transport in Poly( <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi mathvariant="italic">p</mi></math></span>-Phenylene Vinylene)

P. W. M. Blom; M. C. J. M. Vissenberg

doi:10.1103/PhysRevLett.80.3819

Dispersive Hole Transport in Poly( $p$ -Phenylene Vinylene)

P. W. M. Blom and M. C. J. M. Vissenberg

Phys. Rev. Lett. 80, 3819 – Published 27 April 1998

Abstract

The transient hole transport in poly( $p$ -phenylene vinylene) (PPV) is investigated by measuring the response times of PPV-based light-emitting diodes. It is demonstrated that the observed response times are governed by the dispersive transport of holes in PPV. In terms of the stochastic transport model of Scher and Montroll, the results correspond to a dispersion parameter $α = 0.45$ , independent of temperature. This indicates that the dispersion in hole transport in PPV is due mainly to structural disorder, rather than to energetic disorder.

Received 21 November 1997

DOI:https://doi.org/10.1103/PhysRevLett.80.3819

Authors & Affiliations

P. W. M. Blom^1,* and M. C. J. M. Vissenberg^1,2

¹Philips Research Laboratories, Professor Holstlaan 4, 5656 AA Eindhoven, The Netherlands
²Instituut-Lorentz, University of Leiden, 2300 RA Leiden, The Netherlands