期刊
APPLIED PHYSICS LETTERS
卷 98, 期 8, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3558906
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资金
- Ministry of Education, Culture, Sports, Science and Technology (MEXT)
- Funding Program for World-Leading Innovative R & D on Science and Technology
A material possessing a very small energy gap between its singlet and triplet excited states, Delta E1-3, which allows efficient up-conversion of triplet excitons into a singlet state and leads to efficient thermally activated delayed fluorescence (TADF), is reported. The compound, 2-biphenyl-4,6-bis(12-phenylindolo[2,3-a] carbazole-11-yl)-1,3,5-triazine, breaks the restriction of a large energy gap, with a Delta E1-3 of just 0.11 eV, while maintaining a high fluorescent radiative decay rate (k(r) similar to 10(7)). The intense TADF provides a pathway for highly efficient electroluminescence. (C) 2011 American Institute of Physics. [doi: 10.1063/1.3558906]
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