Hole mobilities in a photorefractive polymer

Arosha W. Goonesekera; Stephen Ducharme; James M. Takacs; Lei Zhang

doi:10.1117/12.254249

15 October 1996 Hole mobilities in a photorefractive polymer

Arosha W. Goonesekera, Stephen Ducharme, James M. Takacs, Lei Zhang

Proceedings Volume 2850, Organic Photorefractive Materials and Xerographic Photoreceptors; (1996) https://doi.org/10.1117/12.254249
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

We present measurements of the hole mobility in a photorefractive polymer composite as a function of temperature and applied electric field. The material is a composite, non-linear optical polymer bisphenol A 4-4'- nitroaminostilbene (bisA-NAS) mixed with 30 wt % of the hole transport agent diethylamino-benzaldehyde diphenyl hydrazone (DEH). The electric field and temperature dependencies of the hole mobility in the photorefractive polymer can be described at high fields by exp((beta) E^1/2) and exp [-(T₀/T)²] respectively, in agreement with the disorder theory of the well-known hopping model developed for charge-transport in molecularly doped polymers. The mobilities at all temperatures decrease ((beta) less than 0) with increasing fields up to a certain field, but increase again ((beta) greater than 0) at higher fields.

Citation Download Citation

Arosha W. Goonesekera, Stephen Ducharme, James M. Takacs, and Lei Zhang "Hole mobilities in a photorefractive polymer", Proc. SPIE 2850, Organic Photorefractive Materials and Xerographic Photoreceptors, (15 October 1996); https://doi.org/10.1117/12.254249

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