Abstract
By applying a molecular orbital perturbation approach, we calculate the formation rates for singlet and triplet molecular excitons associated with intermolecular charge-transfer processes. It is found that the interchain bond-charge correlation has a strong influence on the relative probabilities for generating singlet and triplet excitons. Most importantly, application of our approach to a model system for poly-(paraphenylenevinylene) shows that the ratio between the electroluminescence and photoluminescence quantum yields generally exceeds the 25% spin-degeneracy statistical limit.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 131-134 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 84 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2000 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy