Abstract
First, a brief review is given, of recent experimental and theoretical progress in the determination of the spin-dependent exciton formation rates in electroluminescent π-conjugated polymers. We then describe our recent development of the coupled-cluster equation of motion method, and present its application to the theoretical study of singlet and triplet exciton formation rates and polymer light-emitting diode quantum efficiency. It is found that, in general, singlet excitons can be formed with a higher yield than triplet excitons. The underlying mechanism is still a matter of debate. Here, we explore the role of inter-chain charge-bond correlation effects.
Original language | English (US) |
---|---|
Pages (from-to) | 691-702 |
Number of pages | 12 |
Journal | Journal of the Chinese Chemical Society |
Volume | 50 |
Issue number | 3 B |
DOIs | |
State | Published - 2003 |
Externally published | Yes |
Keywords
- Coupled-cluster
- Exciton formation
- Light-emitting diodes
- Rate
ASJC Scopus subject areas
- General Chemistry