Radical-Based Organic Light-Emitting Diodes with Maximum External Quantum Efficiency of 10.6%

被引：39

作者：

Cui, Zhiyuan ^{[1
]}

Ye, Shaofeng ^{[2
]}

Wang, Lu ^{[1
]}

Guo, Hanqing ^{[1
]}

Obolda, Ablikim ^{[1
]}

Dong, Shengzhi ^{[1
]}

Chen, Yingxin ^{[1
]}

Ai, Xin ^{[1
]}

Abdurahman, Alim ^{[1
]}

Zhang, Ming ^{[1
]}

Wang, Lei ^{[2
]}

Li, Feng ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Qianjin Ave 2699, Changchun 130012, Jilin, Peoples R China

[2] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2018年 / 9卷 / 22期

基金：

中国国家自然科学基金;

关键词：

CARBAZOLE; MAGNETISM; EMISSION; ADDUCTS; POLYMER; SINGLE; CHARGE; RATIO;

D O I：

10.1021/acs.jpclett.8b03019

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A new luminescent radical, tris-2,4,6-trichlorophenylmethy1-1,5-diazarcarbazole (TTM-DACz), was synthesized and characterized. The photoluminescence quantum yield of TTM-DACz in solid 1,3,5-tris(1-phenyl-1H-benzimidazol-2-yl)benzene matrix film (5 wt %) is as high as 57.0%. Organic light-emitting diodes (OLEDs) employing TTM-DACz as the emitter were fabricated. By rational design of the device structure and host guest doping system, external quantum efficiency (EQE) of up to 10.6% of the optimized device with a red CIE chromaticity of (0.62, 0.36) was obtained, which is among the highest values for red OLEDs using nonphosphorescent materials as the emitters. This work will accelerate the development of luminescent radical materials for high-performance OLEDs.

引用

页码：6644 / 6648

页数：9

共 37 条

[1] A Stable Room-Temperature Luminescent Biphenylmethyl Radical
Ai, Xin
Chen, Yingxin
Feng, Yuting
Li, Feng
[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2018, 57 (11) : 2869 - 2873
[2] Excitonic singlet-triplet ratio in a semiconducting organic thin film
Baldo, MA
O'Brien, DF
Thompson, ME
Forrest, SR
[J]. PHYSICAL REVIEW B, 1999, 60 (20): : 14422 - 14428
[3] Highly efficient phosphorescent emission from organic electroluminescent devices
Baldo, MA
O'Brien, DF
You, Y
Shoustikov, A
Sibley, S
Thompson, ME
Forrest, SR
[J]. NATURE, 1998, 395 (6698) : 151 - 154
[4] Stable radical cores: a key for bipolar charge transport in glass forming carbazole and indole derivatives
Castellanos, Sonia
Gaidelis, Valentas
Jankauskas, Vygintas
Grazulevicius, Juozas V.
Brillas, Enric
Lopez-Calahorra, Francisco
Julia, Luis
Velasco, Dolores
[J]. CHEMICAL COMMUNICATIONS, 2010, 46 (28) : 5130 - 5132
[5] A New Design Strategy for Efficient Thermally Activated Delayed Fluorescence Organic Emitters: From Twisted to Planar Structures
Chen, Xian-Kai
Tsuchiya, Youichi
Ishikawa, Yuma
Zhong, Cheng
Adachi, Chihaya
Bredas, Jean-Luc
[J]. ADVANCED MATERIALS, 2017, 29 (46)
[6] Ultrahigh Efficiency Fluorescent Single and Bi-Layer Organic Light Emitting Diodes: The Key Role of Triplet Fusion
Chiang, Chien-Jung
Kimyonok, Alpay
Etherington, Marc K.
Griffiths, Gareth C.
Jankus, Vygintas
Turksoy, Figen
Monkman, Andy P.
[J]. ADVANCED FUNCTIONAL MATERIALS, 2013, 23 (06) : 739 - 746
[7] Charge Transfer States in Stable Neutral and Oxidized Radical Adducts from Carbazole Derivatives
Fajari, Lluis
Papoular, Robert
Reig, Marta
Brillas, Enric
Luis Jorda, Jose
Vallcorba, Oriol
Rius, Jordi
Velasco, Dolores
Julia, Luis
[J]. JOURNAL OF ORGANIC CHEMISTRY, 2014, 79 (04) : 1771 - 1777
[8] Novel Luminescent Benzimidazole-Substituent Tris(2,4,6-trichlorophenyl)methyl Radicals: Photophysics, Stability, and Highly Efficient Red-Orange Electroluminescence
Gao, Yingchang
Xu, Wei
Ma, Hongwei
Obolda, Ablikim
Yan, Wenfu
Dong, Shengzhi
Zhang, Ming
Li, Feng
[J]. CHEMISTRY OF MATERIALS, 2017, 29 (16) : 6733 - 6739
[9] A pure red organic light-emitting diode based on a luminescent derivative of tris(2,4,6-trichlorotriphenyl)methyl radical
Gao, Yingchang
Obolda, Ablikim
Zhang, Ming
Li, Feng
[J]. DYES AND PIGMENTS, 2017, 139 : 644 - 650
[10] High-external-quantum-efficiency organic light-emitting devices
Gu, G
Garbuzov, DZ
Burrows, PE
Venkatesh, S
Forrest, SR
Thompson, ME
[J]. OPTICS LETTERS, 1997, 22 (06) : 396 - 398

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