Journal article
Linear and nonlinear photoexcitation dynamics in pi-conjugated polymers
Physical review letters, Vol.90(4), pp.046804-046804
01/31/2003
DOI: 10.1103/PhysRevLett.90.046804
PMID: 12570443
Abstract
Linear and nonlinear recombination kinetics with various lifetime distributions were identified for long-lived photoexcitations in a series of pi-conjugated polymer films using modulation frequency and excitation intensity dependencies of the photoinduced absorption. This includes monomolecular, bimolecular, and defect-limited recombination processes that lead to saturation. Using generalized kinetics parameters, we found characteristic plots for all recombination processes. Specifically, the bimolecular recombination process shows superlinear intensity dependence away from the steady state; on the contrary, dispersive bimolecular recombination leads to sublinear dependence.
Details
- Title: Subtitle
- Linear and nonlinear photoexcitation dynamics in pi-conjugated polymers
- Creators
- O Epshtein - Technion – Israel Institute of TechnologyY Eichen - Technion – Israel Institute of TechnologyE Ehrenfreund - Technion – Israel Institute of TechnologyM Wohlgenannt - University of UtahZ V Vardeny - Technion – Israel Institute of Technology
- Resource Type
- Journal article
- Publication Details
- Physical review letters, Vol.90(4), pp.046804-046804
- Publisher
- AMERICAN PHYSICAL SOC
- DOI
- 10.1103/PhysRevLett.90.046804
- PMID
- 12570443
- ISSN
- 0031-9007
- eISSN
- 1079-7114
- Number of pages
- 4
- Language
- English
- Date published
- 01/31/2003
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428771502771
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