Stationary and transient photoconduction in conjugated polymers

Vladimir I. Arkhipov; Siegfried Barth; Evguenia V. Emelianova; Dirk Hertel; Heinz Baessler

doi:10.1117/12.425483

10 April 2001 Stationary and transient photoconduction in conjugated polymers

Vladimir I. Arkhipov, Siegfried Barth, Evguenia V. Emelianova, Dirk Hertel, Heinz Baessler

Proceedings Volume 4415, Optical Organic and Inorganic Materials; (2001) https://doi.org/10.1117/12.425483
Event: Advanced Optical Materials and Devices, 2000, Vilnius, United States

Abstract

The problem of charge carrier photogeneration in conjugated polymers is related to the question concerning the singlet excitation binding energy. Measurements of the cw- photoconduction in several conjugated polymers as a function of photon energy, electric field, and temperature under different cell geometries indicate that excitons can dissociate at an electrode as well as via sensitization in the bulk. Intrinsic photogeneration can also occur at higher photon energies via dissociation of vibrationally excited singlet excitons. Charge transport, monitored via time-of- flight signals, can be rationalized in terms of a disorder concept except for a ladder-type poly-(para-phenylene) film in which built-in disorder is weak.

Citation Download Citation

Vladimir I. Arkhipov, Siegfried Barth, Evguenia V. Emelianova, Dirk Hertel, and Heinz Baessler "Stationary and transient photoconduction in conjugated polymers", Proc. SPIE 4415, Optical Organic and Inorganic Materials, (10 April 2001); https://doi.org/10.1117/12.425483

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