C Rothe
Direct measurement of the singlet generation yield in polymer light-emitting diodes
Rothe, C; King, SM; Monkman, AP
Authors
SM King
AP Monkman
Abstract
In this study, the singlet and triplet exciton generation yields of a representative blue-emitting conjugated polymer are directly compared using simultaneous optical and electrical excitation measurements. After carefully accounting for bimolecular triplet annihilation and knowing the independently measured solid state inter-system-crossing yield of the polymer, a singlet generation yield of 44% is obtained, in the working device, which is clearly in excess of the simple quantum statistical 25% limit.
Citation
Rothe, C., King, S., & Monkman, A. (2006). Direct measurement of the singlet generation yield in polymer light-emitting diodes. Physical Review Letters, 97(7), https://doi.org/10.1103/physrevlett.97.076602
| Journal Article Type | Article |
|---|---|
| Publication Date | 2006-08 |
| Deposit Date | Nov 27, 2006 |
| Publicly Available Date | Sep 13, 2010 |
| Journal | Physical Review Letters |
| Print ISSN | 0031-9007 |
| Electronic ISSN | 1079-7114 |
| Publisher | American Physical Society |
| Peer Reviewed | Peer Reviewed |
| Volume | 97 |
| Issue | 7 |
| DOI | https://doi.org/10.1103/physrevlett.97.076602 |
| Keywords | Triplet formation, Electroluminescence, Polyfluorene, Efficiency, Devices. |
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© 2006 by The American Physical Society. All rights reserved.
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