Exciton and charge-transfer dynamics in polymer semiconductors
| dc.creator | Bittner, Eric R. | |
| dc.creator | Ramon, John Glen S. | |
| dc.date | 2005-10-19 | |
| dc.date.accessioned | 2026-07-07T06:44:35Z | |
| dc.date.available | 2026-07-07T06:44:35Z | |
| dc.description | Organic semiconducting polymers are currently of broad interest as potential low-cost materials for photovoltaic and light-emitting display applications. I will give an overview of our work in developing a consistent quantum dynamical picture of the excited state dynamics underlying the photo-physics. We will also focus upon the quantum relaxation and reogranization dynamics that occur upon photoexcitation of a couple of type II donor-acceptor polymer heterojunction systems. Our results stress the significance of vibrational relaxation in the state-to- state relaxation and the impact of curve crossing between charge- transfer and excitonic states. Furthermore, while a tightly bound charge-transfer state (exciplex) remain the lowest excited state, we show that the regeneration of the optically active lowest excitonic state in TFB:F8BT is possible via the existence of a steady-state involving the bulk charge-transfer state. Finally, we will discuss ramifications of these results to recent experimental studied and the fabrication of efficient polymer LED and photovoltaics. | |
| dc.description | Proceedings of the 2005 Paris Workshop on quantum dynamics | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0510522 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0510522 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/102824 | |
| dc.subject | Materials Science | |
| dc.title | Exciton and charge-transfer dynamics in polymer semiconductors | |
| dc.type | text |