Above 20% External Quantum Efficiency in Thermally Activated Delayed Fluorescence Device Using Furodipyridine-Type Host Materials

被引：101

作者：

Im, Yirang ^{[1
]}

Lee, Jun Yeob ^{[1
]}

机构：

[1] Dankook Univ, Dept Polymer Sci & Engn, Yongin 448701, Gyeonggi, South Korea

来源：

CHEMISTRY OF MATERIALS | 2014年 / 26卷 / 03期

关键词：

LIGHT-EMITTING-DIODES; EMISSION; EMITTERS; DESIGN;

D O I：

10.1021/cm403358h

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

High efficiency green thermally activated delayed fluorescence device with a quantum efficiency above 20% was developed using a bipolar host material, 3-(furo[2,3-b:5,4-b']dipyridin-3-yl)-N,N-diphenylaniline (3TPAPFP), derived from furodipyridine core structure. The furodipyridine based 3TPAPFP showed a singlet and triplet energy for efficient energy transfer to thermally activated delayed fluorescent dopant, (4s,6s)-2,4,5,6-tetra(9H-carbazol-9-yl)isophthalonitrile (4CzIPN), and bipolar charge transport properties for balanced hole and electron density. A high quantum efficiency of 21.2% was achieved in the fluorescent device using the 3TPAPFP host doped with 4CzIPN dopant at a very low doping concentration of 1%.

引用

页码：1413 / 1419

页数：7

共 22 条

[1]

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

[2]

Blue-Light Emission of Cu(I) Complexes and Singlet Harvesting [J].

Czerwieniec, Rafal ;

Yu, Jiangbo ;

Yersin, Hartmut .

INORGANIC CHEMISTRY, 2011, 50 (17) :8293-8301

[3]

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

[4]

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

[5]

Huang, Jing ;

Sun, Ning ;

Dong, Yongqiang ;

Tang, Runli ;

Lu, Ping ;

Cai, Ping ;

Li, Qianqian ;

Ma, Dongge ;

Qin, Jingui ;

Li, Zhen .

ADVANCED FUNCTIONAL MATERIALS, 2013, 23 (18) :2329-2337

[6]

The contribution of triplet-triplet annihilation to the lifetime and efficiency of fluorescent polymer organic light emitting diodes [J].

King, S. M. ;

Cass, M. ;

Pintani, M. ;

Coward, C. ;

Dias, F. B. ;

Monkman, A. P. ;

Roberts, M. .

JOURNAL OF APPLIED PHYSICS, 2011, 109 (07)

[7]

Triplet annihilation exceeding spin statistical limit in highly efficient fluorescent organic light-emitting diodes [J].

Kondakov, D. Y. ;

Pawlik, T. D. ;

Hatwar, T. K. ;

Spindler, J. P. .

JOURNAL OF APPLIED PHYSICS, 2009, 106 (12)

[8]

Highly electron deficient pyrido[3′,2′:4,5] furo[2,3-b] pyridine as a core structure of a triplet host material for high efficiency green phosphorescent organic light-emitting diodes [J].

Lee, Chil Won ;

Lee, Jun Yeob .

CHEMICAL COMMUNICATIONS, 2013, 49 (55) :6185-6187

[9]

High-efficiency organic light-emitting diodes utilizing thermally activated delayed fluorescence from triazine-based donor-acceptor hybrid molecules [J].

Lee, Sae Youn ;

Yasuda, Takuma ;

Nomura, Hiroko ;

Adachi, Chihaya .

APPLIED PHYSICS LETTERS, 2012, 101 (09)

[10]

Highly Efficient Organic Light-Emitting Diode Based on a Hidden Thermally Activated Delayed Fluorescence Channel in a Heptazine Derivative [J].

Li, Jie ;

Nakagawa, Tetsuya ;

MacDonald, James ;

Zhang, Qisheng ;

Nomura, Hiroko ;

Miyazaki, Hiroshi ;

Adachi, Chihaya .

ADVANCED MATERIALS, 2013, 25 (24) :3319-3323

← 1 2 3 →