Electron transport in molecularly doped polymers

Paul M. Borsenberger; William T. Gruenbaum; Edward H. Magin

doi:10.1117/12.217321

23 August 1995 Electron transport in molecularly doped polymers

Paul M. Borsenberger, William T. Gruenbaum, Edward H. Magin

Proceedings Volume 2526, Xerographic Photoreceptors and Photorefractive Polymers; (1995) https://doi.org/10.1117/12.217321
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Electron mobilities have been measured in a series of acceptor doped polymers over a range of fields and temperatures. The results are described within the framework of a formalism based on disorder, due to Baessler and coworkers. The formalism is premised on the assumption that charge propagation occurs by hopping through a manifold of localized states with superimposed energetic and positional disorder. A key parameter of the formalism is the energy width of the hopping site manifold. The width is in good agreement with predictions of a model based on dipolar disorder recently proposed by Young. The model assumes that the width is determined by a dipolar component due to the dopant molecule and a van der Waals component. These results, in conjunction with literature results for a wide range of donor doped polymers, show that for a given dopant concentration, the van der Waals component is essentially constant and independent of the donor or acceptor molecule. It is suggested that the van der Waals component is largely of geometrical or positional origin.

Citation Download Citation

Paul M. Borsenberger, William T. Gruenbaum, and Edward H. Magin "Electron transport in molecularly doped polymers", Proc. SPIE 2526, Xerographic Photoreceptors and Photorefractive Polymers, (23 August 1995); https://doi.org/10.1117/12.217321

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