High-Efficiency Fluorescent Organic Light-Emitting Devices Using Sensitizing Hosts with a Small Singlet-Triplet Exchange Energy

被引：543

作者：

Zhang, Dongdong ^{[1
]}

Duan, Lian ^{[1
]}

Li, Chen ^{[1
]}

Li, Yilang ^{[1
]}

Li, Haoyuan ^{[1
]}

Zhang, Deqiang ^{[1
]}

Qiu, Yong ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem, Key Lab Organ Optoelect & Mol Engn, Minist Educ, Beijing 100084, Peoples R China

来源：

ADVANCED MATERIALS | 2014年 / 26卷 / 29期

基金：

中国国家自然科学基金;

关键词：

ACTIVATED DELAYED FLUORESCENCE; ELECTROLUMINESCENCE EFFICIENCY; DIODES; BLUE; EMISSION;

D O I：

10.1002/adma.201401476

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Materials with small singlet-triplet splits (Delta E(ST)s) are introduced as sensitizing hosts to excite fluorescent dopants, breaking the trade-off between small Delta E-ST and high radiative decay rates. A highly efficient orange-fluorescent organic light-emitting diode (OLED) is prepared, showing a maximum external quantum efficiency of 12.2%.

引用

页码：5050 / 5055

页数：6

共 45 条

[1] Excitonic singlet-triplet ratio in a semiconducting organic thin film [J].

Baldo, MA ;

O'Brien, DF ;

Thompson, ME ;

Forrest, SR .

PHYSICAL REVIEW B, 1999, 60 (20) :14422-14428

[2] High-efficiency fluorescent organic light-emitting devices using a phosphorescent sensitizer [J].

Baldo, MA ;

Thompson, ME ;

Forrest, SR .

NATURE, 2000, 403 (6771) :750-753

[3] Highly efficient phosphorescent emission from organic electroluminescent devices [J].

Baldo, MA ;

O'Brien, DF ;

You, Y ;

Shoustikov, A ;

Sibley, S ;

Thompson, ME ;

Forrest, SR .

NATURE, 1998, 395 (6698) :151-154

[4] Recent developments in molecular organic electroluminescent materials [J].

Chen, CH ;

Shi, J ;

Tang, CW .

MACROMOLECULAR SYMPOSIA, 1998, 125 :1-48

[5] Ultrahigh Efficiency Fluorescent Single and Bi-Layer Organic Light Emitting Diodes: The Key Role of Triplet Fusion [J].

Chiang, Chien-Jung ;

Kimyonok, Alpay ;

Etherington, Marc K. ;

Griffiths, Gareth C. ;

Jankus, Vygintas ;

Turksoy, Figen ;

Monkman, Andy P. .

ADVANCED FUNCTIONAL MATERIALS, 2013, 23 (06) :739-746

[6] High-efficiency yellow double-doped organic light-emitting devices based on phosphor-sensitized fluorescence [J].

D'Andrade, BW ;

Baldo, MA ;

Adachi, C ;

Brooks, J ;

Thompson, ME ;

Forrest, SR .

APPLIED PHYSICS LETTERS, 2001, 79 (07) :1045-1047

[7] Triplet Harvesting with 100% Efficiency by Way of Thermally Activated Delayed Fluorescence in Charge Transfer OLED Emitters [J].

Dias, Fernando B. ;

Bourdakos, Konstantinos N. ;

Jankus, Vygintas ;

Moss, Kathryn C. ;

Kamtekar, Kiran T. ;

Bhalla, Vandana ;

Santos, Jose ;

Bryce, Martin R. ;

Monkman, Andrew P. .

ADVANCED MATERIALS, 2013, 25 (27) :3707-3714

[8] Controlling the Recombination Zone of White Organic Light-Emitting Diodes with Extremely Long Lifetimes [J].

Duan, Lian ;

Zhang, Deqiang ;

Wu, Kongwu ;

Huang, Xiuqi ;

Wang, Liduo ;

Qiu, Yong .

ADVANCED FUNCTIONAL MATERIALS, 2011, 21 (18) :3540-3545

[9] Strategies to Design Bipolar Small Molecules for OLEDs: Donor-Acceptor Structure and Non-Donor-Acceptor Structure [J].

Duan, Lian ;

Qiao, Juan ;

Sun, Yongduo ;

Qiu, Yong .

ADVANCED MATERIALS, 2011, 23 (09) :1137-1144

[10] Efficient up-conversion of triplet excitons into a singlet state and its application for organic light emitting diodes [J].

Endo, Ayataka ;

Sato, Keigo ;

Yoshimura, Kazuaki ;

Kai, Takahiro ;

Kawada, Atsushi ;

Miyazaki, Hiroshi ;

Adachi, Chihaya .

APPLIED PHYSICS LETTERS, 2011, 98 (08)

← 1 2 3 4 5 →