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Electronic and optical excitations in crystalline conjugated polymers
| Content Provider | Semantic Scholar |
|---|---|
| Author | Horst, Jw van Der Bobbert, Pa Peter Michels, Maj Thijs |
| Copyright Year | 2003 |
| Abstract | We calculate the electronic and optical excitations of crystalline polythiophene and poly(phenylene vinylene), using the GW approximation for the electron self-energy and including excitonic effects by solving the electron-hole Bethe-Salpeter equation. Surprisingly, we find optical gaps and exciton binding energies that are much smaller than experimental values and our earlier calculations on chains embedded in a dielectric medium. We attribute the disagreement to the absence of quantum mechanical coherence in most experimental situations and discuss possible reasons for this absence. An aggregate-forming ladder-type PPP appears to be an interesting exception. © 2003 Elsevier Science B.V. All rights reserved. |
| Starting Page | 281 |
| Ending Page | 282 |
| Page Count | 2 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/S0379-6779(02)00910-4 |
| Alternate Webpage(s) | https://pure.tue.nl/ws/files/2172397/Metis210714.pdf |
| Alternate Webpage(s) | http://alexandria.tue.nl/openaccess/Metis210714.pdf |
| Alternate Webpage(s) | https://doi.org/10.1016/S0379-6779%2802%2900910-4 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
