Abstract
The lowest excited triplet state of a mixed biphenyl-tetracyanobenzene single crystal has been studied. The formation of mobile charge-transfer excitons with a highly temperature dependent diffusion rate (activation energy: 700 cm-1 is established. A hopping frequency of 5 × 107 jumps per second at 250°K was estimated. A very strong optical spin polarization allows ESR-spectroscopic studies of the excitons at lifetimes smaller than 0.2 msec.
Original language | English |
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Pages (from-to) | 43-48 |
Number of pages | 6 |
Journal | Chemical Physics Letters |
Volume | 21 |
Issue number | 1 |
DOIs | |
State | Published - 1 Aug 1973 |
Externally published | Yes |