Photoluminescence quenching in a polymer thin-film field-effect luministor

Peter Dyreklev, Olle Inganäs, Jari Paloheimo, Henrik Stubb

Research output: Contribution to journalArticleScientificpeer-review

81 Citations (Scopus)

Abstract

We report the observation of photoluminescence quenching in thin films of poly(3‐hexylthiophene) and Langmuir–Blodgett films of poly(3‐hexylthiophene)/arachidic acid by the injection of positive charges in the polymer. Charge injection was made in a polymer field effect transistor, used in what we name the luministor mode. The quenching is discussed in terms of polarons/bipolarons acting as recombination centra for the excitons, suppressing the photoluminescence. The inverse phenomenon, luminescence enhancement by depletion of charges, has also been achieved.
Original languageEnglish
Pages (from-to)2816-2820
Number of pages5
JournalJournal of Applied Physics
Volume71
Issue number6
DOIs
Publication statusPublished - 1992
MoE publication typeA1 Journal article-refereed

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