Bayliss, S. L. , Chepelianskii, A. D., Sepe, A., Walker, B. J., Ehrler, B., Bruzek, M. J., Anthony, J. E. and Greenham, N. C. (2014) Geminate and nongeminate recombination of triplet excitons formed by singlet fission. Physical Review Letters, 112(23), 238701. (doi: 10.1103/PhysRevLett.112.238701)
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Abstract
We report the simultaneous observation of geminate and nongeminate triplet-triplet annihilation in a solution-processable small molecule TIPS-tetracene undergoing singlet exciton fission. Using optically detected magnetic resonance, we identify recombination of triplet pairs directly following singlet fission, as well as recombination of triplet excitons undergoing bimolecular triplet-triplet annihilation. We show that the two processes give rise to distinct magnetic resonance spectra, and estimate the interaction between geminate triplet excitons to be 60 neV.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Bayliss, Dr Sam |
| Authors: | Bayliss, S. L., Chepelianskii, A. D., Sepe, A., Walker, B. J., Ehrler, B., Bruzek, M. J., Anthony, J. E., and Greenham, N. C. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Physical Review Letters |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| ISSN (Online): | 1079-7114 |
| Published Online: | 09 June 2014 |
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