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...

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Detalles Bibliográficos
Autores principales: Zhao, Bo, Zhang, Tianyou, Chu, Bei, Li, Wenlian, Su, Zisheng, Wu, Hairuo, Yan, Xingwu, Jin, Fangming, Gao, Yuan, Liu, Chengyuan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2015
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4448663/
https://www.ncbi.nlm.nih.gov/pubmed/26023882
http://dx.doi.org/10.1038/srep10697
Descripción
Sumario: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.

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