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黄锋同学的论文“Distinguishing the Respective Determining Factors for Spectral Broadening and Concentration Quenching in Multiple Resonance Typed TADF Emitter Systems”发表在Mater. Horizon. 上

时间:2022-06-16关键词:张晓宏教授团队浏览量:623

Abstract: Multiple resonance (MR) type thermally activated delayed fluorescence (TADF) emitters have attracted much recent attention due to their narrow emission spectra and high photoluminescence quantum yields (PLQYs). Spectral broadening and concentration quenching at high doping concentrations are two issues currently limiting the development of MR-TADF emitters. However, the origins of these have not been fully clarified so far. In this work, by investigating emitters with the same MR cores but peripheral groups of different steric types, we distinguished that the spectral broadening and concentration quenching are mainly caused by excimer formation and triplet exciton annihilation, respectively. This understanding on aggregated behaviors of MR emitters provides new insight for the further development of high-performance MR-TADF emitters with low concentration sensitivities.


链接https://pubs.rsc.org/en/Content/ArticleLanding/2022/MH/D2MH00511E