at Google ScholarTitle data
Brown, Peter J. ; Thomas, D. Steve ; Köhler, Anna ; Wilson, Joanne S. ; Kim, Ji-Seon ; Ramsdale, Catherine M. ; Sirringhaus, Henning ; Friend, Richard H.:
Effect of interchain interactions on the absorption and emission of poly(3-hexylthiophene).
In: Physical Review B.
Vol. 67
(2003)
Issue 6
.
- 064203.
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.67.064203
Abstract in another language
The absorption spectrum of polythiophene and its derivative poly(3-hexylthiophene) (P3HT) is usually described in terms of an intrachain exciton coupled to a single phonon mode. We show that this model is too simplistic for highly ordered, regioregular P3HT and that, analogous to the case of charged polarons in this material, interchain interactions must be taken into account to correctly describe the absorption spectrum. We show that the lowest energy feature in the π−π* region of the absorption spectrum is associated with an interchain absorption, the intensity of which is correlated with the degree of order in the polymer. Correspondingly, we show that the emission from P3HT also exhibits contributions from both interchain and intrachain states, in a manner similar to that recently shown for poly(phenylenevinylene). Having reinterpreted the physical origin of the features in the absorption and emission spectra of P3HT, we then model these spectra and show how they evolve as the degree of order in the polymer is changed by varying several physical parameters including temperature and regioregularity of the polymer.
Further data
| Item Type: | Article in a journal |
|---|---|
| Refereed: | No |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics II - Optoelectronics of Soft Matter > Chair Experimental Physics II - Optoelectronics of Soft Matter - Univ.-Prof. Dr. Anna Köhler Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Experimental Physics II - Optoelectronics of Soft Matter |
| Result of work at the UBT: | No |
| DDC Subjects: | 500 Science > 530 Physics |
| Date Deposited: | 18 Mar 2015 08:28 |
| Last Modified: | 04 Aug 2023 10:14 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/8462 |