期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 28, 期 7, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202103550
关键词
circularly polarized luminescence; electroluminescence; organic light-emitting diode; sensitizer; thermally activated delayed fluorescence
资金
- National Natural Science Foundation of China [22122111, 92056109, 91956119]
- Beijing National Laboratory for Molecular Sciences [BNLMS-CXXM-202105]
- Youth Innovation Promotion Association CAS [2019034]
The TSCP strategy utilizes TADF molecules as sensitizers and CP-FL molecules as emitters to improve the electroluminescence efficiencies of circularly polarized fluorescent emitters, offering a promising method to construct high-performance circularly polarized organic light-emitting diodes. By designing CP-FL emitters with specific characteristics, TSCP-type CP-OLEDs with excellent overall performances can be realized.
A promising strategy of thermally activated delayed fluorescence (TADF) sensitized circularly polarized luminescence (CPL) has been proposed for improving the electroluminescence efficiencies of circularly polarized fluorescent emitters. Compared with chiral TADF emitters which suffer from the dilemma of small Delta E-ST accompanied by small k(r), the TADF-sensitized CPL (TSCP) strategy using TADF molecules as sensitizers and CP-FL molecules as emitters might be the most promising method to construct high-performance circularly polarized organic light-emitting diodes (CP-OLEDs). Consequently, by taking advantage of the theoretically 100% exciton utilization of TADF sensitizers, especially, by designing CP-FL emitters with high PLQY, narrow FWHM and large g(lum) values, TSCP-type CP-OLEDs with excellent overall performances can be realized.
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