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 |