Publication Type |
Journal Article |
School or College |
College of Science |
Department |
Physics |
Creator |
Lupton, John Mark |
Other Author |
Reufer, M.; Scherf, U. |
Title |
Stimulated emission depletion of triplet excitons in a phosphorescent organic laser |
Date |
2006 |
Description |
Triplet formation is investigated in an optically pumped polymer laser by detecting the phosphorescence emission after excitation. A clear correlation is observed between the onset of lasing and a saturation of phosphorescence intensity due to stimulated emission depletion of the singlet state and the resulting reduction in intersystem crossing. The results are consistent with intersystem crossing constituting the dominant triplet formation pathway in conjugated polymers. Excitation at different wavelengths has no effect on the triplet saturation behavior, which allows the authors to exclude singlet fission or breaking as the origin of triplet formation. The method constitutes an implementation of a highly nondegenerate excitonic switch. |
Type |
Text |
Publisher |
American Institute of Physics (AIP) |
Journal Title |
Applied Physics Letters |
Volume |
89 |
Issue |
14 |
First Page |
141111 |
DOI |
10.1063/1.2357023 |
citatation_issn |
36951 |
Subject |
Triplet excitons; Triplet formation; Emission depletion; Phosphorescent organic laser; Optically pumped polymer laser |
Subject LCSH |
Triplet state; Optical pumping |
Language |
eng |
Bibliographic Citation |
Reufer, M., Lupton, J. M., & Scherf, U. (2006). Stimulated emission depletion of triplet excitons in a phosphorescent organic laser. Applied Physics Letters, 89, 141111. |
Rights Management |
(c)American Institute of Physics. The following article appeared in Reufer, M., Lupton, J. M., & Scherf, U., Applied Physics Letters, 89, 2006 and may be found at http://dx.doi.org/10.1063/1.2357023 |
Format Medium |
application/pdf |
Format Extent |
158,598 bytes |
Identifier |
ir-main,11858 |
ARK |
ark:/87278/s67m0sjk |
Setname |
ir_uspace |
ID |
706839 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s67m0sjk |