The temperature dependence of emission spectra and their decay parameters for pyromellitic dianhydride-phenanthrene chargetransfer crystals have been investigated between 1.7 and 300 K. It has been established that the delayed fluorescence originates from triplet-triplet annihilation at temperatures
Thermal-delayed fluorescence of pyromellitic dianhydride—anthracene trap in charge-transfer pyromellitic dianhyride—phenanthrene host crystal
✍ Scribed by B. Kozankiewicz
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 328 KB
- Volume
- 173
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Thermal-delayed fluorescence of pyromellitic dianhydride
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The temperature dependence of fluorescence, phosphorescence and delayed fluorescence intensities and decay times were studied for the charge-transfer crystal of pyromellitic dianhydride-phenanthrene, between 5 and 300 K. A kinetic model which describes the behaviour of emission of this crystal is pr
Singlet and triplet exciton energy migration in the charge-transfer crystal of pyromellitie dianhydride-phenanthrene, undoped and doped with anthracene (10-4-10-2 M/M), have been studied in the 5-300 K temperature range. At low temperatures singlet and triplet excitons are self-trapped. They become