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Erschienen in:
2008 | OriginalPaper | Buchkapitel
Dynamics of Excited States and Charge Photogeneration in Organic Semiconductor Materials
verfasst von : Kim G. Jespersen, Yuri Zaushitsyn, Sebastian Westenhoff, T. Pullerits, Arkady Yartsev, Olle Inganäs, Villy Sundström
Erschienen in: Fluorescence of Supermolecules, Polymers, and Nanosystems
Verlag: Springer Berlin Heidelberg
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Organic semiconductor materials are attracting increasing interest for application as active materialsin large-area displays, light-emitting diodes, transistors, photodetectors, solar cells, etc. Elementaryprocesses like excitation energy transfer, charge photogeneration, charge transport, and photoluminescencequenching are at the basis of the function of the materials. In order to design new materials and optimizetheir function, a detailed knowledge of the various light-induced processes is required. In this contributionwe discuss how ultrafast spectroscopy can be used to study excited-state relaxation and quenching, energytransfer, and charge generation in neat conjugated polymers as well as in polymer–C60 blends.