Prompt and delayed emissions from a naphthalene crystal doped with pyrene have been investigated in the temperature range 77-300 K. It is shown that delayed fluorescence (DF) in this crystal originates from heterofusion and homofusion of two different types of trap triplets at low temperature (T< 13
Fast depopulation of triplet exciton traps and delayed fluorescence of crystalline benzene
β Scribed by F. Aurich; J. Marquard
- Publisher
- Elsevier Science
- Year
- 1971
- Tongue
- English
- Weight
- 325 KB
- Volume
- 8
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Triplet exciton traps in crystalline benzene are rapidly depopulated by a red light pulse , whk?h causes a pulse of intensive UV emission. A simultaneous step down of the phosphorescence intensity indicates an exciton release mecbanisp followed by a mutual annihilation of the excitons.
π SIMILAR VOLUMES
A study of the low-temperature luminescence of neat crystalline 2,2'-biquinoline (BQ) is presented. The 2 K spectrum is comprised of intense, broad components in the 380-500 nm region, with less inte..lse, structured bands in the 500-575 nm tee.ion. Both bands exhibit different degrees of metastabil