Highly efficient nondoped blue organic light-emitting diodes based on a star-group tetraphenylethylene-substituted aggregation-induced-emission-active organic fluorescent small molecules
Highly efficient nondoped blue organic light-emitting diodes based on a star-group tetraphenylethylene-substituted aggregation-induced-emission-active organic fluorescent small molecules
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基于星型四苯乙烯取代聚集诱导发射活性有机荧光小分子的高效非掺杂蓝色有机发光二极管
DOI:
10.1016/j.dyepig.2019.108082
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发表时间:
2020-04
影响因子:
4.5
通讯作者:
Wenjun Yang
中科院分区:
文献类型:
--
作者:
Lei Xu;Yuan Yu;Jinjin Shi;Wei Cui;Xianhao Lv;Miao Cang;Qikun Sun;Shanfeng Xue;Wenjun Yang
Tetraphenylethene (TPE) is a star group exhibiting an excellent aggregation-induced emission (AIE) effect. Although significant progress has been made in the field of organic electroluminescence (EL) based on TPE-substituted emitters, highly efficient and high-color-purity TPE-substituted blue fluorophores with the AIE effect are still very rare. In this paper, a simple and effective molecule—N-phenyl-N-(4-(1-phenyl-1H-phenanthro[9,10-d]imidazol-2-yl)phenyl)-4′-(1,2,2-triphenylvinyl)-[1,1′-biphenyl]-4-amine (TPETPAPI)—was designed and synthesized using triphenylamine (donor), phenanthroimidazole (acceptor), and tetraphenylethylene (AIE generator). In tetrahydrofuran solution, the molecule emits little light and the quantum efficiency is low (1.3%); however, the fluorescence is enhanced in the film (73%), exhibiting remarkable AIE properties, thus enabling TPETPAPI to be used in future applications in organic light-emitting diodes. The nondoped device exhibits a low turn-on voltage of 3.0 V, a maximum luminance of 10780 cd m−2, maximum current efficiency of 12.20 cd A−1, and maximum power efficiency of 11.95 lm W−1, with an EL peak at 476 nm. TPETPAPI exhibits the most impressive EL performance reported to date for a TPE-substituted blue fluorophore with AIE' characteristics.
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影响因子:
19
作者:
Ping-I Shih;Chu-Ying Chuang;Chen‐Han Chien;E. Diau;C. Shu
通讯作者:
Ping-I Shih;Chu-Ying Chuang;Chen‐Han Chien;E. Diau;C. Shu
影响因子:
29.4
作者:
Lyu, Yi-Yeol;Kwak, Jeonghun;Char, Kookheon
通讯作者:
Char, Kookheon
影响因子:
8.6
作者:
Liu, Yang;Chen, Shuming;Tang, Ben Zhong
通讯作者:
Tang, Ben Zhong
影响因子:
4.9
作者:
Shitong Zhang;Weijun Li;Liang Yao;Yuyu Pan;F. Shen;Ran Xiao;Bing Yang;Yuguang Ma
通讯作者:
Shitong Zhang;Weijun Li;Liang Yao;Yuyu Pan;F. Shen;Ran Xiao;Bing Yang;Yuguang Ma
影响因子:
--
作者:
Hyuntae Park;Jonghee Lee;I. Kang;H. Chu;Jeong-Ik Lee;Soon-Ki Kwon;Yun‐Hi Kim
通讯作者:
Hyuntae Park;Jonghee Lee;I. Kang;H. Chu;Jeong-Ik Lee;Soon-Ki Kwon;Yun‐Hi Kim