Journal article
Photogeneration Action Spectroscopy of Neutral and Charged Excitations in Films of a Ladder-Type Poly(Para-Phenylene)
Physical Review Letters, Vol.82(16), pp.3344-3347
04/01/1999
DOI: 10.1103/PhysRevLett.82.3344
Abstract
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. {copyright} {ital 1999} {ital The American Physical Society}
Details
- Title: Subtitle
- Photogeneration Action Spectroscopy of Neutral and Charged Excitations in Films of a Ladder-Type Poly(Para-Phenylene)
- Creators
- Markus Wohlgenannt - University of Iowa, Physics and AstronomyW. Graupner - Graz University of TechnologyG. Leising - Graz University of TechnologyZ.V. Vardeny - University of Utah
- Resource Type
- Journal article
- Publication Details
- Physical Review Letters, Vol.82(16), pp.3344-3347
- DOI
- 10.1103/PhysRevLett.82.3344
- ISSN
- 0031-9007
- eISSN
- 1079-7114
- Language
- English
- Date published
- 04/01/1999
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984439156102771
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