Linear and nonlinear photoexcitation dynamics in ∏-conjugated polymers

Update Item Information
Publication Type Journal Article
School or College College of Science
Department Physics
Creator Vardeny, Zeev Valentine; Ehrenfreund, Eitan A.
Other Author Epshtein, O.; Eichen, Y.; Wohlgenannt, M.
Title Linear and nonlinear photoexcitation dynamics in ∏-conjugated polymers
Date 2003-01
Description Linear and nonlinear recombination kinetics with various lifetime distributions were identified for long-lived photoexcitations in a series of rr-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.
Type Text
Publisher American Physical Society
Journal Title Physical Review Letters
Volume 90
Issue 4
First Page 46804
Last Page 46801
DOI 10.1103/PhysRevLett.90.046804
citatation_issn 0031-9007
Subject Linear photoexcitation; Nonlinear photoexcitation; pi-conjugated polymers; Recombination kinetics
Subject LCSH Semiconductors -- Recombination; Conjugated polymers -- Optical properties; Conducting polymers -- Optical properties
Language eng
Bibliographic Citation Epshtein, O., Eichen, Y., Ehrenfreund, E., Wohlgenannt, M., & Vardeny, Z. V. (2003). Linear and nonlinear photoexcitation dynamics in ∏-conjugated polymers. Physical Review Letters, 90(4), 046804-1-4.
Rights Management (c) American Physical Society http://dx.doi.org/10.1103/PhysRevLett.90.046804
Format Medium application/pdf
Format Extent 411,485 bytes
Identifier ir-main,10038
ARK ark:/87278/s63n2mnq
Setname ir_uspace
ID 704196
Reference URL https://collections.lib.utah.edu/ark:/87278/s63n2mnq
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