Dilute limit of hopping transport in molecularly doped polymers

Zoltan G. Soos; Shuqing Bao; Geoffrey W. Hayden

doi:10.1117/12.363888

5 October 1999 Dilute limit of hopping transport in molecularly doped polymers

Zoltan G. Soos, Shuqing Bao, Geoffrey W. Hayden

Proceedings Volume 3799, Organic Photorefractives, Photoreceptors, Waveguides, and Fibers; (1999) https://doi.org/10.1117/12.363888
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

Random variables for the position, energy, and orientation of donors are used to simulate hole transport in polymers with donor fraction p < 10 percent and clusters. Marcus hopping rates yield decreasing drift velocity with increasing bias field E. In contrast to energetic disorder emphasized in models at p approximately 50 percent, the mean dwell time (tau) (E) increases as positional or orientational disorder restricts hopping. Competition between energetic and positional disorder suggests a compensation temperature. Simulations of dilute systems are analyzed in terms of transient random walks, ensemble averages, and order statistics.

Citation Download Citation

Zoltan G. Soos, Shuqing Bao, and Geoffrey W. Hayden "Dilute limit of hopping transport in molecularly doped polymers", Proc. SPIE 3799, Organic Photorefractives, Photoreceptors, Waveguides, and Fibers, (5 October 1999); https://doi.org/10.1117/12.363888

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