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Even Parity States in Ppv, Polythiophene and Polysilanes

Published online by Cambridge University Press:  16 February 2011

F. Guo ,
M. Chandross  and
S. Mazumdar
F. Guo
Affiliation:
University of Arizona, Department of Physics, Tucson, AZ 8572
M. Chandross
Affiliation:
University of Arizona, Department of Physics, Tucson, AZ 8572
S. Mazumdar
Affiliation:
University of Arizona, Department of Physics, Tucson, AZ 8572
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Abstract

Two photon absorptions (TPA) in conjugated polymers with large bond alternation are reinterpreted. TPA to the 2Ag in long chains should be tiny due to cancellation effects, and therefore the observed strong, narrow TPA is to a higher even parity state. We also present the first theoretical evidence for bound biexcitons, and explain recent photoinduced absorption data.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 328: Symposium Q – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials , 1993 , 787
Copyright
Copyright © Materials Research Society 1994

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References

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