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Photoluminescence quenching at a polythiophene/C-60 heterojunction
Linköping University, Department of Physics, Chemistry and Biology, Applied Physics. Linköping University, The Institute of Technology.
Department of Chemical Physics, Lund University, Lund, Sweden.
Department of Chemical Physics, Lund University, Lund, Sweden.
Department of Chemical Physics, Lund University, Lund, Sweden.
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2000 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 61, no 19, 12957-12963 p.Article in journal (Refereed) Published
Abstract [en]

Quenching of photoluminescence in a substituted polythiophene in the presence of a deposited C-60 layer is studied by steady-state and time-resolved photoluminescence (PL). The steady-state PL is evaluated by con -sidering the interference of the absorbed and emitted electro-optical field in the thin film coupled to exciton diffusion in the conjugated polymer. PL quenching occurs for excitons generated within 5 nm from the heterojunction. A blueshift of the polymer emission spectrum is observed when C-60 is deposited on top of a polymer thin film. The blueshift is shown to be caused by PL quenching before the excitation is transferred to the lowest-energy sites.

Place, publisher, year, edition, pages
2000. Vol. 61, no 19, 12957-12963 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-49741DOI: 10.1103/PhysRevB.61.12957OAI: oai:DiVA.org:liu-49741DiVA: diva2:270637
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-12

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Inganäs, Olle

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