Abstract
It was found that a local charge-transfer excitation on the donor(D)-acceptor(A) pair leads to a semimacroscopic valence change from the quasi-ionic () to quasineutral () states in organic molecular-compound TTF-chloranil with mixed DA stacks. Photogenerated neutral-ionic domain walls, which are responsible for anomalous photoconductivity, show the temporal annihilation due to the one-dimensional recombination.
- Received 24 July 1990
DOI:https://doi.org/10.1103/PhysRevB.42.6853
©1990 American Physical Society