Publication Type |
Journal Article |
School or College |
College of Science |
Department |
Physics |
Creator |
Vardeny, Zeev Valentine |
Other Author |
Wohlgenannt, M.; Graupner, W.; Leising, G. |
Title |
Photogeneration action spectroscopy of neutral and charged excitations in films of ladder-type poly(para-phenylene) |
Date |
1999-04 |
Description |
The photogeneration quantum efficiency action spectra of long-lived neutral and charged excitations in films of a ladder-type poly(para-phenylene) were measured. We found that both triplet and polaron action spectra show, in addition to a step function increase at the optical gap, a monotonic rise at higher energies. For triplets this rise is explained by singlet exciton fission into triplet pairs from which the triplet exciton energy in the gap was obtained; this energy was also confirmed by measuring the weak phosphorescence band. For polarons the photogeneration increase at high energies is modeled by a novel hot electron interchain tunneling process. |
Type |
Text |
Publisher |
American Physical Society |
Journal Title |
Physical Review Letters |
Volume |
82 |
Issue |
16 |
First Page |
3344 |
Last Page |
3347 |
DOI |
10.1103/PhysRevLett.82.3344 |
citatation_issn |
0031-9007 |
Subject |
Photogeneration; Neutral excitations; Charged excitations; pi-conjugated polymers; Transient spectroscopy |
Subject LCSH |
Exciton theory; Thin films -- Optical properties |
Language |
eng |
Bibliographic Citation |
Wohlgenannt, M., Graupner, W., Leising, G., & Vardeny, Z. V. (1999). Photogeneration action spectroscopy of neutral and charged excitations in films of ladder-type poly(para-phenylene). Physical Review Letters, 82(16), 3344-7. |
Rights Management |
(c) American Physical Society http://dx.doi.org/10.1103/PhysRevLett.82.3344 |
Format Medium |
application/pdf |
Format Extent |
158,251 bytes |
Identifier |
ir-main,9905 |
ARK |
ark:/87278/s6rx9wcr |
Setname |
ir_uspace |
ID |
704449 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6rx9wcr |