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- Title
Formation cross-sections of singlet and triplet excitons in [pi]-conjugated polymers.
- Authors
Wohlgenannt, M.; Tandon, Kunj; Mazumdar, S.; Ramasesha, S.; Vardeny, Z.V.
- Abstract
Reports direct measurements of sigma[sub]s/sigma[sub]t for a large number of pi-conjugated polymers and oligomers. Details of the charge-transfer reaction for correlated pi-electrons; Quantification of the process using exact valence bond calculations; Evidence of a strong dependence of sigma[sub]s/sigma[sub]t on the optical gap that is a signature of the discrete excitonic energy spectrum, in which higher energy excitonic levels participate in the charge recombination process.
- Subjects
EXCITON theory; ELECTRIC properties of polymers; OLIGOMERS; ION recombination
- Publication
Nature, 2001, Vol 409, Issue 6819, p494
- ISSN
0028-0836
- Publication type
Article
- DOI
10.1038/35054025