The transient absorption spectrum of singlet excitons in a p-terphenyl crystal is reported. Using nanosecond laser pulses for excitation and monitoring, a spectrum has been obtained from 320 to 650 nm which shows two intense absorption peaks at 340 and 560 nm. The absolute cross sections of these ab
Singlet exciton energy transfer in tetracene-doped p-terphenyl single crystals
โ Scribed by Anita C. Jones; Katarzyna Janecka-styrcz; David A. Elliot; John O. Williams
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 424 KB
- Volume
- 80
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
A picosecond laser system has been employed to study the kmetics of singlet evciton energy transfer m p-terphenyl single crystals doped with tetracene over the temperature range 77-300 K. First-order kinetics prevail and exciton migration from host to guest is controlled by thermal activation over a potential energy barrier-
๐ SIMILAR VOLUMES
Pimsccond time-resolved fluorescence spectroscopy measurements have been conducted on very thin tetraoen&oped anthracene miaouystak\_ The observed time dependence of the fluorescence intensities of crystals with wuiouc: cancentrations of tetxacene IS an&tent with predictions of the combmed theory of