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Photoconductivity of Photorefractive Polymers

Published online by Cambridge University Press:  15 February 2011

J. C. Scott ,
L. Th. Pautmeier ,
W. E. Moerner ,
C. A. Walsh ,
S. M. Silence ,
T. J. Matray  and
R. J. Twieg
J. C. Scott
Affiliation:
IBM Research Division, IBM Almaden Research Center, 650 Harry Rd., San Jose, CA 95120–6099
L. Th. Pautmeier
Affiliation:
IBM Research Division, IBM Almaden Research Center, 650 Harry Rd., San Jose, CA 95120–6099
W. E. Moerner
Affiliation:
IBM Research Division, IBM Almaden Research Center, 650 Harry Rd., San Jose, CA 95120–6099
C. A. Walsh
Affiliation:
IBM Research Division, IBM Almaden Research Center, 650 Harry Rd., San Jose, CA 95120–6099
S. M. Silence
Affiliation:
IBM Research Division, IBM Almaden Research Center, 650 Harry Rd., San Jose, CA 95120–6099
T. J. Matray
Affiliation:
IBM Research Division, IBM Almaden Research Center, 650 Harry Rd., San Jose, CA 95120–6099
R. J. Twieg
Affiliation:
IBM Research Division, IBM Almaden Research Center, 650 Harry Rd., San Jose, CA 95120–6099
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Abstract

The photorefractive effect has been recently observed by holographic grating formation in optically non-linear polymers molecularly doped with charge transport agents. Grating formation can be understood as a four-step process, the first three of which dictate the photoconductive response: charge generation, mobility and trapping. The fourth step is modulation of the refractive index by the resulting space-charge field, via the electro-optic effect. We present the results of photoconductivity experiments to determine charge generation efficiency, carrier mobility and the kinetics of recombination and trapping, focussing primarily on the epoxy polymer bisphenol-A-diglycidylether 4-nitro-1, 2-phenylenediaminc (bisA-NPDA) doped with the hole transport agent, diethylaminobenzaldehyde-diphenylhydrazone (DEH). The electric field dependence of the generation efficiency and mobility differ in detail from results on other molecularly doped polymers.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 277: Symposium V – Macromolecular Host-Guest Complexes: Optical, Optoelectronic, and Photorefractive Properties and Applications , 1992 , 135
Copyright
Copyright © Materials Research Society 1992

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References

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