20% External Quantum Efficiency in Solution-Processed Blue Thermally Activated Delayed Fluorescent Devices

被引：174
作者：
Cho, Yong Joo [1 ]
Chin, Byung Doo [1 ]
Jeon, Sang Kyu [2 ]
Lee, Jun Yeob [2 ]
机构：
[1] Dankook Univ, Dept Polymer Sci & Engn, Yongin 448701, Gyeonggi, South Korea
[2] Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, Gyeonggi, South Korea
来源：
ADVANCED FUNCTIONAL MATERIALS | 2015年 / 25卷 / 43期
基金：
新加坡国家研究基金会;
关键词：
LIGHT-EMITTING-DIODES; BIPOLAR HOST; DEEP BLUE; POLYMERS; OLEDS; LAYER;
D O I：
10.1002/adfm.201502995
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Highly efficient solution-processed blue thermally activated delayed fluorescent (TADF) devices are developed by designing soluble blue TADF emitters. The solubility and emission color could be managed by introducing F as an electron withdrawing unit instead of CN. Two soluble blue TADF emitters are synthesized and show a high external quantum efficiency of 20.0% with a color coordinate of (0.16,0.26), and it is the best quantum efficiency reported in solution-processed TADF devices. The device performances of the solution-processed blue TADF devices are comparable to those of vacuum-processed blue TADF devices.
引用
收藏
页码：6786 / 6792
页数：7
相关论文
共 22 条
  • [1] New Solution-Processable Electron Transport Materials for Highly Efficient Blue Phosphorescent OLEDs
    Ahmed, Eilaf
    Earmme, Taeshik
    Jenekhe, Samson A.
    [J]. ADVANCED FUNCTIONAL MATERIALS, 2011, 21 (20) : 3889 - 3899
  • [2] LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS
    BURROUGHES, JH
    BRADLEY, DDC
    BROWN, AR
    MARKS, RN
    MACKAY, K
    FRIEND, RH
    BURN, PL
    HOLMES, AB
    [J]. NATURE, 1990, 347 (6293) : 539 - 541
  • [3] High Efficiency in a Solution-Processed Thermally Activated Delayed-Fluorescence Device Using a Delayed-Fluorescence Emitting Material with Improved Solubility
    Cho, Yong Joo
    Yook, Kyoung Soo
    Lee, Jun Yeob
    [J]. ADVANCED MATERIALS, 2014, 26 (38) : 6642 - 6646
  • [4] The effect of interfacial layer on the performance of organic light-emitting diodes
    Choulis, SA
    Choong, VE
    Mathai, MK
    So, F
    [J]. APPLIED PHYSICS LETTERS, 2005, 87 (11)
  • [5] Triplet Harvesting with 100% Efficiency by Way of Thermally Activated Delayed Fluorescence in Charge Transfer OLED Emitters
    Dias, Fernando B.
    Bourdakos, Konstantinos N.
    Jankus, Vygintas
    Moss, Kathryn C.
    Kamtekar, Kiran T.
    Bhalla, Vandana
    Santos, Jose
    Bryce, Martin R.
    Monkman, Andrew P.
    [J]. ADVANCED MATERIALS, 2013, 25 (27) : 3707 - 3714
  • [6] Solution processable small molecules for organic light-emitting diodes
    Duan, Lian
    Hou, Liudong
    Lee, Tae-Woo
    Qiao, Juan
    Zhang, Deqiang
    Dong, Guifang
    Wang, Liduo
    Qiu, Yong
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 2010, 20 (31) : 6392 - 6407
  • [7] Solution-Processed Small Molecules As Mixed Host for Highly Efficient Blue and White Phosphorescent Organic Light-Emitting Diodes
    Fu, Qiang
    Chen, Jiangshan
    Shi, Changsheng
    Ma, Dongge
    [J]. ACS APPLIED MATERIALS & INTERFACES, 2012, 4 (12) : 6579 - 6586
  • [8] FLEXIBLE LIGHT-EMITTING-DIODES MADE FROM SOLUBLE CONDUCTING POLYMERS
    GUSTAFSSON, G
    CAO, Y
    TREACY, GM
    KLAVETTER, F
    COLANERI, N
    HEEGER, AJ
    [J]. NATURE, 1992, 357 (6378) : 477 - 479
  • [9] Hirata S, 2015, NAT MATER, V14, P330, DOI [10.1038/nmat4154, 10.1038/NMAT4154]
  • [10] Solution-processible multi-component cyclometalated iridium phosphors for high-efficiency orange-emitting OLEDs and their potential use as white light sources
    Ho, Cheuk-Lam
    Wong, Wai-Yeung
    Zhou, Gui-Hang
    Yao, Bing
    Xie, Zhiyuan
    Wang, Lixiang
    [J]. ADVANCED FUNCTIONAL MATERIALS, 2007, 17 (15) : 2925 - 2936
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