Highly Efficient Bilayer Interface Exciplex For Yellow Organic Light-Emitting Diode

被引：165

作者：

Hung, Wen-Yi ^{[1
]}

Fang, Guan-Cheng ^{[1
]}

Chang, Yuh-Chia ^{[2
]}

Kuo, Ting-Yi ^{[2
]}

Chou, Pi-Tai ^{[2
,3
]}

Lin, Shih-Wei ^{[2
]}

Wong, Ken-Tsung ^{[2
,4
]}

机构：

[1] Natl Taiwan Ocean Univ, Inst Optoelect Sci, Keelung 20224, Taiwan

[2] Natl Taiwan Univ, Dept Chem, Taipei 10617, Taiwan

[3] Natl Taiwan Univ, Ctr Emerging Mat & Adv Devices, Taipei 10617, Taiwan

[4] Acad Sinica, Inst Atom & Mol Sci, Taipei 10617, Taiwan

来源：

ACS APPLIED MATERIALS & INTERFACES | 2013年 / 5卷 / 15期

关键词：

organic light-emitting diode (OLED); time-of-flight; exciplex; bilayer interface; reverse intersystem crossing (RISC); C-3-symmetry; DELAYED FLUORESCENCE; PHOSPHORESCENT OLEDS; TRANSPORT MATERIALS; ELECTRON-MOBILITY; BLUE; ELECTROLUMINESCENCE; EMISSION; DEVICES; LAYER; DERIVATIVES;

D O I：

10.1021/am402032z

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A simple three-layer interfacial-type yellow emission exciplex device with an external quantum efficiency as high as 7.7% has been successfully achieved by combining conformation compatible C-3-symmetric hole-transporting TCTA and electron-transporting 3P-T2T. The excellent and balanced charge-transporting properties of TCTA and 3P-T2T and the large energy-levels offset (0.8 eV) of TCTA/3P-T2T interface play important roles for the efficient exciplexes formation, which are effectively confined around the interfacial region due to the high triplet energies (2.85 eV) of TCTA and 3P-T2T. The high-performance OLED was believed to be from the effective harvest of exciplex triplet excitons via reverse intersystem crossing process.

引用

页码：6826 / 6831

页数：6

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