Publication Type |
Journal Article |
School or College |
College of Science |
Department |
Physics |
Creator |
Vardeny, Zeev Valentine |
Other Author |
Wohlgenannt, M.; Jiang, X. M. |
Title |
Confined and delocalized polarons in ∏-conjugated oligomers and polymers: a study of the effective conjugation length |
Date |
2004-06 |
Description |
We studied optical absorption of polarons in ∏-conjugated oligomers and polymers using the photoinduced absorption technique as well as chemical doping spectra from the literature. We find that the photon energy of the polaron low-energy transition obeys a relationship that depends only on the oligomer-length in a wide class of unsubstituted and substituted oligomer solutions and films. Based on this observation, we show that polarons in polymer films can be either confined as in oligomers or quite delocalized, depending on the individual p-conjugated semiconductor. In high mobility polymer films polarons may be delocalized over several chains. |
Type |
Text |
Publisher |
American Physical Society |
Journal Title |
Physical Review B |
Volume |
69 |
Issue |
24 |
First Page |
241204 |
Last Page |
241201 |
DOI |
10.1103/PhysRevB.69.241204 |
citatation_issn |
1098-0121 |
Subject |
Confined polarons; Delocalized polarons; pi-conjugated oligomers; pi-conjugated polymers; Effective conjugation length |
Subject LCSH |
Polarons; Conjugated polymers -- Optical properties |
Language |
eng |
Bibliographic Citation |
Wohlgenannt, M., Jiang, X. M., & Vardeny, Z. V. (2004). Confined and delocalized polarons in ∏-conjugated oligomers and polymers; a study of the effective conjugation length. Physical Review B, 69(24), 241204-1-4. |
Rights Management |
(c) American Physical Society http://dx.doi.org/10.1103/PhysRevB.69.241204 |
Format Medium |
application/pdf |
Format Extent |
73,797 bytes |
Identifier |
ir-main,10062 |
ARK |
ark:/87278/s6dv234n |
Setname |
ir_uspace |
ID |
703829 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6dv234n |