Low efficiency roll-off phosphorescent organic light-emitting devices using thermally activated delayed fluorescence hosts materials based 1, 2, 4-triazole acceptor

Low efficiency roll-off phosphorescent organic light-emitting devices using thermally activated delayed fluorescence hosts materials based 1, 2, 4-triazole acceptor
复制标题

使用基于1,2,4-三唑受体的热激活延迟荧光主体材料的低效率滚降磷光有机发光器件

DOI:
10.1016/j.orgel.2019.06.041
复制
发表时间:
2019-11
影响因子:
3.2
通讯作者:
Xu Bingshe
Xu Bingshe
中科院分区:
工程技术3区
文献类型:
--
作者:
Xu Huixia;Zhao Yaping;Zhang Jing;Zhang Di;Miao Yanqin;Shinar Joseph;Shinar Ruth;Wang Hua;Xu Bingshe

文献摘要

参考文献

被引文献

相似文献

磷光体有机电致发光器件(PhOLED)中的主体材料具有热激活延迟荧光(TADF)特性,可以有效地克服效率衰减。本文以1,2,4-三氮唑衍生物(TAZ)为受体,吩噻嗪(PTZ)、吩恶嗪(PXZ)和9,9-二甲基吖啶(DMAC)为给体,合成了六种具有给体-π-受体(D-π-A)和D-π-A-π-D结构的双极性化合物。其结构经1HNMR、13 CNMR和X-射线单晶衍射确证。大的空间位阻使这些分子具有典型的TADF特征,包括0.08-0.30 eV的小的单重态-三重态能量分裂(Δ E S T)和完全空间分离的最高占据分子轨道(HOMO)和最低未占据分子轨道(LUMO)电子密度。由这些新型TADF材料承载的PhOLED显示出优异的性能,但具有低效率滚降。
The host in phosphrescent organic light emitting devices (PhOLEDs), showing the thermally activated delayed fluorescence (TADF) charateristic, can effectively overcome the efficiency roll-off. Herein, six bipolar compounds with donor-π-acceptor (D-π-A) and D-π-A-π-D structures have been synthesized using 1, 2, 4-triazole derivative (TAZ) as an acceptor and phenothiazine (PTZ), phenoxazine (PXZ), and 9, 9-dimethylacridane (DMAC) as donors. The molecular structures were confirmed by 1 H NMR, 13 C NMR and X-ray single-crystal diffractions. The large steric hindrance endows these molecules with typical TADF features, including the small singlet-triplet energy splitting (Δ E S T) of 0.08–0.30 eV and completely spatially separate highest occupied molecular orbitals (HOMO) and the lowest unoccupied molecular orbitals (LUMO) electron densities. The PhOLEDs hosted by these novel TADF materials display excellent performances with low efficiency roll-off.
DOI: 10.1021/acs.inorgchem.5b02625
发表时间: 2016
影响因子: 4.6
作者:
Xiaolong Yang;Xianbin Xu;Jing-shuang Dang;Guijiang Zhou;Cheuk-Lam Ho;Wai-Yeung Wong
通讯作者: Wai-Yeung Wong
DOI: 10.1039/c6tc02615j
发表时间: 2016-10
影响因子: 6.4
作者:
Samik Jhulki;A. K. Mishra;Avijit Ghosh;T. J. Chow;J. N. Moorthy
通讯作者: Samik Jhulki;A. K. Mishra;Avijit Ghosh;T. J. Chow;J. N. Moorthy
以被低估的聚(N-乙烯基咔唑)为主体的界面三线态限制实现高效的溶液加工深蓝色和白色电致磷光器件
DOI: 10.1039/c3tc30912f
发表时间: 2013-07
影响因子: 6.4
作者:
Ding, Junqiao;Xie, Zhiyuan;Wong, Wai-Yeung;Wang, Lixiang
通讯作者: Wang, Lixiang
DOI: 10.1016/j.orgel.2016.09.020
发表时间: 2016-12
影响因子: 3.2
作者:
S. Yuan;Xiaoyang Du;Juewen Zhao;W. Liu;Hui Lin;Caijun Zheng;S. Tao;Xiaohong Zhang
通讯作者: S. Yuan;Xiaoyang Du;Juewen Zhao;W. Liu;Hui Lin;Caijun Zheng;S. Tao;Xiaohong Zhang
轻松合成用于黄色和白色有机发光二极管的高效 Lepidine 基磷光铱 (III) 配合物
DOI: 10.1002/adfm.201503826
发表时间: 2016-02-09
影响因子: 19
作者:
Tao, Peng;Li, Wei-Ling;Huang, Wei
通讯作者: Huang, Wei