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Electrophosphorescence And Delayed Electroluminescence From Pristine Polyfluorene Thin-film Devices At Low Temperature

Sinha, S; Rothe, C; Guntner, R; Scherf, U; Monkman, AP

Electrophosphorescence And Delayed Electroluminescence From Pristine Polyfluorene Thin-film Devices At Low Temperature Thumbnail


Authors

S Sinha

C Rothe

R Guntner

U Scherf

AP Monkman



Abstract

Intrinsic long-lived electrophosphorescence and delayed electroluminescence from a conjugated polymer (polyfluorene) thin film is observed for the first time at low temperature. From bias offset voltage dependent measurements, it is concluded that the delayed fluorescence is generated via triplet-triplet annihilation. A fast and efficient triplet exciton quenching by charge carriers is found to occur in the active polymer layer of the working devices.

Citation

Sinha, S., Rothe, C., Guntner, R., Scherf, U., & Monkman, A. (2003). Electrophosphorescence And Delayed Electroluminescence From Pristine Polyfluorene Thin-film Devices At Low Temperature. Physical Review Letters, 90(12), https://doi.org/10.1103/physrevlett.90.127402

Journal Article Type Article
Publication Date 2003-03
Deposit Date Nov 27, 2006
Publicly Available Date Mar 28, 2024
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 90
Issue 12
DOI https://doi.org/10.1103/physrevlett.90.127402
Keywords Light-emitting diodes, Pi-conjugated polymers, Energy-transfer, Triplet energy, Singlet, Performance, Morphology, Dopants.

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Copyright Statement
© 2003 by The American Physical Society. All rights reserved.




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