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
Singlet excitation energy transfer in tetracene doped p-terphenyl single crystals
✍ Scribed by A. Krüger; C. Kryschi; L. Valkunas; D. Schmid
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 876 KB
- Volume
- 157
- Category
- Article
- ISSN
- 0301-0104
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
l A recent measurement cjn an unhoped polycrystalline tetraczne fihn by A.W. Smith also yiekkd a flue of 0.2 f 0.1 nsec for the singlet lifetime.
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
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