Highly Efficient, Conventional, Fluorescent Organic Light-Emitting Diodes with Extended Lifetime

被引：96

作者：

Kim, Hyun-Gu ^{[1
]}

Kim, Kwon-Hyeon ^{[1
]}

Kim, Jang-Joo ^{[1
,2
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea

[2] Seoul Natl Univ, RIAM, Seoul 151744, South Korea

来源：

ADVANCED MATERIALS | 2017年 / 29卷 / 39期

基金：

新加坡国家研究基金会;

关键词：

device lifetimes; energy transfer; exciplex; fluorescent organic light-emitting diodes; iridium complexes; EXTERNAL QUANTUM EFFICIENCY; ACTIVATED DELAYED-FLUORESCENCE; OPERATIONAL STABILITY; PHOSPHORESCENT OLEDS; EXCIPLEX EMITTERS; ENERGY-TRANSFER; DEVICES; 30-PERCENT; CONVERSION; STRATEGY;

D O I：

10.1002/adma.201702159

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Highly efficient, yellow-fluorescent organic light-emitting diodes with a maximum external quantum efficiency exceeding 25.0% and extended lifetime are reported using iridium-complex sensitizers doped in an exciplex host. Energy transfer processes reduce the lifetime of the exciplex and excitons on the Ir complexes and enable an excited state to exist in a conventional fluorescent emitter, thereby increasing device lifetime. The device stability depends on the location of the excited state.

引用

页数：6

共 42 条

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

Baldo, MA ;

Thompson, ME ;

Forrest, SR .

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

[2] 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

[3] 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

[4] 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

[5] Determination of molecular dipole orientation in doped fluorescent organic thin films by photoluminescence measurements [J].

Frischeisen, Joerg ;

Yokoyama, Daisuke ;

Adachi, Chihaya ;

Bruetting, Wolfgang .

APPLIED PHYSICS LETTERS, 2010, 96 (07)

[6] Dual enhancement of electroluminescence efficiency and operational stability by rapid upconversion of triplet excitons in OLEDs [J].

Furukawa, Taro ;

Nakanotani, Hajime ;

Inoue, Munetomo ;

Adachi, Chihaya .

SCIENTIFIC REPORTS, 2015, 5 :8429

[7] Organic light-emitting diodes employing efficient reverse intersystem crossing for triplet-to-singlet state conversion [J].

Goushi, Kenichi ;

Yoshida, Kou ;

Sato, Keigo ;

Adachi, Chihaya .

NATURE PHOTONICS, 2012, 6 (04) :253-258

[8] Remote Steric Effect as a Facile Strategy for Improving the Efficiency of Exciplex-Based OLEDs [J].

Hung, Wen-Yi ;

Wang, Ting-Chih ;

Chiang, Pin-Yi ;

Peng, Bo-Ji ;

Wong, Ken-Tsung .

ACS APPLIED MATERIALS & INTERFACES, 2017, 9 (08) :7355-7361

[9] Balance the Carrier Mobility To Achieve High Performance Exciplex OLED Using a Triazine-Based Acceptor [J].

Hung, Wen-Yi ;

Chiang, Pin-Yi ;

Lin, Shih-Wei ;

Tang, Wei-Chieh ;

Chen, Yi-Ting ;

Liu, Shih-Hung ;

Chou, Pi-Tai ;

Hung, Yi-Tzu ;

Wong, Ken-Tsung .

ACS APPLIED MATERIALS & INTERFACES, 2016, 8 (07) :4811-4818

[10] Purely organic electroluminescent material realizing 100% conversion from electricity to light [J].

Kaji, Hironori ;

Suzuki, Hajime ;

Fukushima, Tatsuya ;

Shizu, Katsuyuki ;

Suzuki, Katsuaki ;

Kubo, Shosei ;

Komino, Takeshi ;

Oiwa, Hajime ;

Suzuki, Furitsu ;

Wakamiya, Atsushi ;

Murata, Yasujiro ;

Adachi, Chihaya .

NATURE COMMUNICATIONS, 2015, 6

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