Abstract
The low electron currents in poly(dialkoxy--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.
- Received 25 January 2011
DOI:https://doi.org/10.1103/PhysRevB.83.195204
©2011 American Physical Society