High-performance blue electroluminescence devices based on distyrylbenzene derivatives

被引:29
作者
Duan, Yu [1 ]
Zhao, Yi
Chen, Ping
Li, Jiang
Liu, Shiyong
He, Feng
Ma, Yuguang
机构
[1] Jilin Univ, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China
[2] Jilin Univ, Minist Educ, Key Labs Supramol Struct & Mat, Changchun 130023, Peoples R China
基金
中国国家自然科学基金;
关键词
LIGHT-EMITTING-DIODES; OLIGO(PHENYLENEVINYLENE) DIMERS; LAYER; HOLE;
D O I
10.1063/1.2215607
中图分类号
O59 [应用物理学];
学科分类号
摘要
Amorphous molecular, distyrylbenzene derivative 2,5,2('),5('),2('),5(')-hexastyryl-[1,1(');4('),1(')] terphenyl (HSTP) is sandwiched between NPB and Alq(3) as blue light-emitting material in typical multilayer organic light-emitting devices, where NPB and Alq(3) are 1,4-bis(1-naphylphenylamino)biphenyl and tris(8-hydroxyquinoline)aluminum, respectively. Formation of exciplex at the interface of NPB and HSTP layer is verified by study on photoluminescence and electroluminescence (EL) spectra. The performance of EL can be greatly improved by optimizations of devices; a pure blue device with Internationale de l'Eclairage coordination (0.16, 0.13), maximum brightness of 15 830 cd/m(2), and current efficiency of 4.88 cd/A is obtained.
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页数:3
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