The Electroluminescence Mechanism of Solution-Processed TADF Emitter 4CzIPN Doped OLEDs Investigated by Transient Measurements

被引：18
|
作者：
Wang, Peng [1 ,2 ]
Zhao, Suling [1 ,2 ]
Xu, Zheng [1 ,2 ]
Qiao, Bo [1 ,2 ]
Long, Zhijuan [1 ,2 ]
Huang, Qingyu [1 ,2 ]
机构：
[1] Beijing Jiaotong Univ, Inst Optoelectron Technol, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Key Lab Luminescence & Opt Informat, Minist Educ, Beijing 100044, Peoples R China
来源：
MOLECULES | 2016年 / 21卷 / 10期
关键词：
carrier transport and recombination; transient EL; energy transfer; TADF-based OLEDS;
D O I：
10.3390/molecules21101365
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
High efficiency, solution-processed, organic light emitting devices (OLEDs), using a thermallyactivated delayed fluorescent (TADF) emitter, 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN), are fabricated, and the transient electroluminescence (EL) decay of the device with a structure of [ITO/PEDOT: PSS/4CzIPN 5 wt % doped 4,40-N, N0-dicarbazolylbiphenyl(CBP)/bis-4,6(3,5-di-4-pyridylphenyl)-2-methylpyrimidine (B4PyMPM)/lithium fluoride (LiF)/Al], is systematically studied. The results shed light on the dominant operating mechanism in TADF-based OLEDs. Electroluminescence in the host-guest system is mainly produced from the 4CzIPN emitter, rather than the exciplex host materials.
引用
收藏
页数：6
相关论文
共 20 条
  • [1] Rational Design of a TADF Emitter with Steric Shielding and Multiple Resonance for Narrowband Solution-Processed OLEDs
    Peethani, Nagaraju
    Kwon, Na Yeon
    Koh, Chang Woo
    Park, Su Hong
    Ha, Jung Min
    Cho, Min Ju
    Woo, Han Young
    Park, Sungnam
    Choi, Dong Hoon
    ADVANCED OPTICAL MATERIALS, 2024, 12 (01)
  • [2] Efficient solution-processed blue and white OLEDs based on a high-triplet bipolar host and a blue TADF emitter
    Li, Wan
    Zhao, Juewen
    Li, Lijuan
    Du, Xiaoyang
    Fan, Cong
    Zheng, Caijun
    Tao, Silu
    ORGANIC ELECTRONICS, 2018, 58 : 276 - 282
  • [3] Dual Multi-Resonance green emitter with steric shielding and core distortion for Solution-Processed TADF-OLEDs
    Kwon, Na Yeon
    Koh, Chang Woo
    Park, Su Hong
    Kwak, Haeun
    Kim, Ha Yeon
    Park, Chae Yeong
    Peethani, Nagaraju
    Park, Jin Young
    Kim, Sojin
    Jin, Kyoungsuk
    Hong, Chang Seop
    Cho, Min Ju
    Park, Sungnam
    Choi, Dong Hoon
    CHEMICAL ENGINEERING JOURNAL, 2025, 506
  • [4] A gold(iii)-TADF emitter as a sensitizer for high-color-purity and efficient deep-blue solution-processed OLEDs
    Zhou, Dongling
    Wu, Siping
    Cheng, Gang
    Che, Chi-Ming
    JOURNAL OF MATERIALS CHEMISTRY C, 2022, 10 (12) : 4590 - 4596
  • [5] High-performance fully solution-processed OLEDs based on carbazole-benzonitrile TADF emitter with long alkyl chains
    Zhang, Zhengmao
    Zhao, Guimin
    Chen, Haowen
    Zhou, Tao
    Tian, Wenwen
    Jiang, Wei
    Sun, Yueming
    ORGANIC ELECTRONICS, 2024, 128
  • [6] Constructing an efficient deep-blue TADF emitter by host-guest interactions towards solution-processed OLEDs with narrowband emission
    Yanchao Xie
    Lei Hua
    Zhi Wang
    Yuerong Liu
    Shian Ying
    Yuchao Liu
    Zhongjie Ren
    Shouke Yan
    Science China(Chemistry), 2023, 66 (03) : 826 - 836
  • [7] Constructing an efficient deep-blue TADF emitter by host-guest interactions towards solution-processed OLEDs with narrowband emission
    Yanchao Xie
    Lei Hua
    Zhi Wang
    Yuerong Liu
    Shian Ying
    Yuchao Liu
    Zhongjie Ren
    Shouke Yan
    Science China Chemistry, 2023, 66 (3) : 826 - 836
  • [8] Constructing an efficient deep-blue TADF emitter by host-guest interactions towards solution-processed OLEDs with narrowband emission
    Xie, Yanchao
    Hua, Lei
    Wang, Zhi
    Liu, Yuerong
    Ying, Shian
    Liu, Yuchao
    Ren, Zhongjie
    Yan, Shouke
    SCIENCE CHINA-CHEMISTRY, 2023, 66 (03) : 826 - 836
  • [9] Solution-Processed Wide-Color-Tunable OLEDs From Green to Red With Multimixed Hosts Using an Aggregation-Induced TADF Emitter
    Gu, Jialu
    Liao, Yi
    Zhang, Yixiao
    Zhang, Jingtao
    Shi, Wei
    Wang, Hua
    Wei, Bin
    Yu, Junsheng
    IEEE TRANSACTIONS ON ELECTRON DEVICES, 2024, 71 (09) : 5502 - 5507
  • [10] "Flagella effect" of thermally activated delayed fluorescence emitter dominating the efficiency of non-doped solution-processed OLEDs
    Zhao, Guimin
    Lou, Yuheng
    Ji, Renjie
    Ran, Qiyin
    Chen, Haowen
    Tian, Wenwen
    Jiang, Wei
    Sun, Yueming
    JOURNAL OF MATERIALS CHEMISTRY C, 2023, 12 (01) : 132 - 142
12