Mobile charge-transfer triplet excitons in biphenyl-tetracyanobenzene single crystals

H. Möhwald, E. Sackmann

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

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 languageEnglish
Pages (from-to)43-48
Number of pages6
JournalChemical Physics Letters
Volume21
Issue number1
DOIs
StatePublished - 1 Aug 1973
Externally publishedYes

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