Aggregation-Induced Delayed Fluorescence Luminogens for Efficient Organic Light-Emitting Diodes

被引：33

作者：

Zeng, Jiajie ^{[1
]}

Guo, Jingjing ^{[1
]}

Liu, Hao ^{[1
]}

Lam, Jacky W. Y. ^{[3
]}

Zhao, Zujin ^{[1
]}

Chen, Shuming ^{[2
]}

Tang, Ben Zhong ^{[1
,3
]}

机构：

[1] South China Univ Technol, Ctr Aggregat Induced Emiss, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

[2] South Univ Sci & Technol China, Dept Elect & Elect Engn, Shenzhen 518055, Guangdong, Peoples R China

[3] Hong Kong Univ Sci & Technol, Chinese Natl Engn Res Ctr Tissue Restorat & Recon, Hong Kong Branch, Dept Chem,Kowloon, Hong Kong, Peoples R China

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2019年 / 14卷 / 06期

基金：

中国国家自然科学基金;

关键词：

aggregation-induced emission; excitons; fluorescence; luminescence; organic light-emitting diodes; EXTERNAL QUANTUM EFFICIENCY; HIGH-PERFORMANCE OLEDS; MOLECULAR DESIGN; INDUCED EMISSION; ROLL-OFF; BLUE; EMITTERS; DEVICES; AIEGENS;

D O I：

10.1002/asia.201801588

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Aggregation-induced delayed fluorescence (AIDF) can be regarded as a special case of aggregation-induced emission (AIE). Luminogens with AIDF can simultaneously emit strongly in solid state and fully utilize the singlet and triplet excitons in organic light-emitting diodes (OLEDs). In this work, two new AIDF luminogens, DMF-BP-DMAC and DPF-BP-DMAC, with an asymmetric D-A-D ' structure, are designed and synthesized. The characteristics of both luminogens are systematically investigated, including single crystal structures, theoretical calculations, photophysical properties and thermal stabilities. Inspired by their AIDF nature, the green-emission non-doped OLEDs based on them are fabricated, which afford good electroluminescence performances, with low turn-on voltages of 2.8 V, high luminance of 52560 cd m(-2), high efficiencies of up to 14.4 %, 42.3 cd A(-1) and 30.2 lm W-1, and very small efficiency roll-off. The results strongly indicate the bright future of non-doped OLEDs on the basis of robust AIDF luminogens.

引用

页码：828 / 835

页数：8

共 51 条

[1] Third-generation organic electroluminescence materials [J].

Adachi, Chihaya .

JAPANESE JOURNAL OF APPLIED PHYSICS, 2014, 53 (06)

[2] Marching Toward Highly Efficient, Pure-Blue, and Stable Thermally Activated Delayed Fluorescent Organic Light-Emitting Diodes [J].

Cai, Xinyi ;

Su, Shi-Jian .

ADVANCED FUNCTIONAL MATERIALS, 2018, 28 (43)

[3] "Rate-limited effect" of reverse intersystem crossing process: the key for tuning thermally activated delayed fluorescence lifetime and efficiency roll-off of organic light emitting diodes [J].

Cai, Xinyi ;

Li, Xianglong ;

Xie, Gaozhan ;

He, Zuozheng ;

Gao, Kuo ;

Liu, Kunkun ;

Chen, Dongcheng ;

Cao, Yong ;

Su, Shi-Jian .

CHEMICAL SCIENCE, 2016, 7 (07) :4264-4275

[4] Efficient Bipolar Blue AIEgens for High-Performance Nondoped Blue OLEDs and Hybrid White OLEDs [J].

Chen, Bin ;

Liu, Baiquan ;

Zeng, Jiajie ;

Nie, Han ;

Xiong, Yi ;

Zou, Jianhua ;

Ning, Honglong ;

Wang, Zhiming ;

Zhao, Zujin ;

Tang, Ben Zhong .

ADVANCED FUNCTIONAL MATERIALS, 2018, 28 (40)

[5] Sky-blue nondoped OLEDs based on new AIEgens: ultrahigh brightness, remarkable efficiency and low efficiency roll-off [J].

Chen, Long ;

Lin, Gengwei ;

Peng, Huiren ;

Ding, Siyang ;

Luo, Wenwen ;

Hu, Rongrong ;

Chen, Shuming ;

Huang, Fei ;

Qin, Anjun ;

Zhao, Zujin ;

Tang, Ben Zhong .

MATERIALS CHEMISTRY FRONTIERS, 2017, 1 (01) :176-180

[6] Rational Design of Aggregation-Induced Emission Luminogen with Weak Electron Donor-Acceptor Interaction to Achieve Highly Efficient Undoped Bilayer OLEDs [J].

Chen, Long ;

Jiang, Yibin ;

Nie, Han ;

Hu, Rongrong ;

Kwok, Hoi Sing ;

Huang, Fei ;

Qin, Anjun ;

Zhao, Zujin ;

Tang, Ben Zhong .

ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (19) :17215-17225

[7] Creation of Bifunctional Materials: Improve Electron-Transporting Ability of Light Emitters Based on AIE-Active 2,3,4,5-Tetraphenylsiloles [J].

Chen, Long ;

Jiang, Yibin ;

Nie, Han ;

Lu, Ping ;

Sung, Herman H. Y. ;

Williams, Ian D. ;

Kwok, Hoi Sing ;

Huang, Fei ;

Qin, Anjun ;

Zhao, Zujin ;

Tang, Ben Zhong .

ADVANCED FUNCTIONAL MATERIALS, 2014, 24 (23) :3621-3630

[8] Efficient Triplet Exciton Fusion in Molecularly Doped Polymer Light-Emitting Diodes [J].

Di, Dawei ;

Yang, Le ;

Richter, Johannes M. ;

Meraldi, Lorenzo ;

Altamimi, Rashid M. ;

Alyamani, Ahmed Y. ;

Credgington, Dan ;

Musselman, Kevin P. ;

MacManus-Driscoll, Judith L. ;

Friend, Richard H. .

ADVANCED MATERIALS, 2017, 29 (13)

[9] The Role of Local Triplet Excited States and D-A Relative Orientation in Thermally Activated Delayed Fluorescence: Photophysics and Devices [J].

Dias, Fernando B. ;

Santos, Jose ;

Graves, David R. ;

Data, Przemyslaw ;

Nobuyasu, Roberto S. ;

Fox, Mark A. ;

Batsanov, Andrei S. ;

Palmeira, Tiago ;

Berberan-Santos, Mrio N. ;

Bryce, Martin R. ;

Monkman, Andrew P. .

ADVANCED SCIENCE, 2016, 3 (12)

[10] Using Guest-Host Interactions To Optimize the Efficiency of TADF OLEDs [J].

dos Santos, Paloma L. ;

Ward, Jonathan S. ;

Bryce, Martin R. ;

Monkman, Andrew P. .

JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 2016, 7 (17) :3341-3346

← 1 2 3 4 5 6 →