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Optical emission from confined poly(thiophene) chains
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics. Linköping University, The Institute of Technology.ORCID iD: 0000-0001-5154-0291
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1998 (English)In: Optical materials (Amsterdam), ISSN 0925-3467, E-ISSN 1873-1252, Vol. 9, no 1-4, 104-108 p.Article in journal (Refereed) Published
Abstract [en]

We discuss the stages of the luminescence processes in substituted and soluble poly(thiophenes), using results from determinations of absolute quantum yields of photoluminescence, fast pump-probe experiments and microcavity devices. Enhancement of the quantum yield of photoluminescence, with poly(thiophenes) in the solid state, call be obtained by dispersing the conjugated chain in a molecularly dispersed polymer blend, or by adding side chains designed for forcing the conjugated main chains apart. At the wavelength of stimulated emission, we observe a narrow bandwidth emission in the high-Q one-dimensional microcavity devices prepared by sandwiching two dielectric mirrors around a thin polymer film, A strong enhancement of the power efficiency is observed at a pump power of 1 mu W/cm(2), but does not conclusively show lasing characteristics. (C) 1998 Elsevier Science B.V.

Place, publisher, year, edition, pages
Elsevier , 1998. Vol. 9, no 1-4, 104-108 p.
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Engineering and Technology
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URN: urn:nbn:se:liu:diva-74872DOI: 10.1016/S0925-3467(97)00062-1ISI: 000072743500019OAI: oai:DiVA.org:liu-74872DiVA: diva2:496785
Available from: 2012-02-10 Created: 2012-02-10 Last updated: 2017-12-07

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Inganäs, OlleBerggren, Magnus

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