title: Highly efficient red OLEDs using DCJTB as the dopant and delayed fluorescent exciplex as the host.
abstract: 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.
authors.affiliation: 1] State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China [2] University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Bo
authors.initials: B
authors.lastname: Zhao
authors.affiliation: 1] State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China [2] University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Tianyou
authors.initials: T
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.
authors.forename: Bei
authors.initials: B
authors.lastname: Chu
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.
authors.forename: Wenlian
authors.initials: W
authors.lastname: Li
authors.affiliation: State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China.
authors.forename: Zisheng
authors.initials: Z
authors.lastname: Su
authors.affiliation: 1] State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China [2] University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Hairuo
authors.initials: H
authors.lastname: Wu
authors.affiliation: 1] State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China [2] University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Xingwu
authors.initials: X
authors.lastname: Yan
authors.affiliation: 1] State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China [2] University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Fangming
authors.initials: F
authors.lastname: Jin
authors.affiliation: 1] State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China [2] University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Gao
authors.affiliation: 1] State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics, and Physics, Chinese Academy of Sciences, Changchun 130033, People's Republic of China [2] University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China.
authors.forename: Chengyuan
authors.initials: C
authors.lastname: Liu