Highly efficient red OLEDs using DCJTB as the dopant and delayed fluorescent exciplex as the host

In this manuscript, we demonstrated a highly efficient DCJTB emission with delayed fluorescent exciplex TCTA:3P-T2T as the host. For the 1.0% DCJTB doped concentration, a maximum luminance, current efficiency, power efficiency and EQE of 22,767 cd m −2 , 22.7 cd A −1 , 21.5 lm W −1 and 10.15% were a...

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Bibliographic Details
Published in:Scientific reports 2015-05, Vol.5 (1), p.10697-10697, Article 10697
Main Authors: Zhao, Bo, Zhang, Tianyou, Chu, Bei, Li, Wenlian, Su, Zisheng, Wu, Hairuo, Yan, Xingwu, Jin, Fangming, Gao, Yuan, Liu, Chengyuan
Format: Article
Language:English
Subjects:
639/301/1005/1007
639/766/1130/2799
Efficiency
Energy transfer
Humanities and Social Sciences
multidisciplinary
Science
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Summary:In this manuscript, we demonstrated a highly efficient DCJTB emission with delayed fluorescent exciplex TCTA:3P-T2T as the host. For the 1.0% DCJTB doped concentration, a maximum luminance, current efficiency, power efficiency and EQE of 22,767 cd m −2 , 22.7 cd A −1 , 21.5 lm W −1 and 10.15% were achieved, respectively. The device performance is the best compared to either red OLEDs with traditional fluorescent emitter or traditional red phosphor of Ir(piq) 3 doped into CBP host. The extraction of so high efficiency can be explained as the efficient triplet excitons up-conversion of TCTA:3P-T2T and the energy transfer from exciplex host singlet state to DCJTB singlet state.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep10697