Efficient and stable deep-blue narrow-spectrum electroluminescence based on hybridized local and charge-transfer (HLCT) state

被引：33
|
作者：
Xiao, Shengbing [1 ]
Zhang, Shi-Tong [1 ]
Gao, Ying [1 ]
Yang, Xinqi [1 ]
Liu, Haichao [1 ]
Li, Weijun [2 ]
Yang, Bing [1 ]
机构：
[1] Jilin Univ, Coll Chem, Inst Theoret Chem, State Key Lab Supramol Struct & Mat, Changchun, Peoples R China
[2] Zhejiang Univ Technol, Coll Chem Engn, State Key Lab Breeding Base Green Chem Synth Tech, Hangzhou 310014, Peoples R China
来源：
DYES AND PIGMENTS | 2021年 / 193卷 / 193期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Phenanthroimidazole-acridine derivatives; HLCT; Deep-blue OLED; LIGHT-EMITTING-DIODES; DELAYED FLUORESCENCE EMITTERS; HIGHLY EFFICIENT; EXCITED-STATE;
D O I：
10.1016/j.dyepig.2021.109482
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Two phenanthroimidazole-acridine derivatives (DPM and TDPM) were designed and synthesized for deep-blue organic light-emitting diode (OLED). Twisted combined rigid structures with hybridized local and charge-transfer (HLCT) state properties enable them to achieve excellent OLED performance. Non-doped OLEDs based on DPM and TDPM show decent deep-blue narrow-spectrum emission with Commission International de L'Eclairage (CIE) coordinates of (0.157, 0.053) and (0.158, 0.045), as well as maximum external quantum efficiency (EQE(max)) of 4.0% and 2.6%, respectively. More importantly, OLEDs based on TDPM exhibit a smaller efficiency roll-off (12%) than that of DPM (35%) at high brightness (820 cd m(-2) for DPM and 893 cd m(-2) for TDPM, respectively). Overall, our work provides a molecular design strategy of HLCT materials for efficient deep-blue OLED with high color purity using purely organic emitter.
引用
收藏
页数：9
相关论文
共 50 条
  • [41] Novel electro-fluorescent materials with hybridized local and charge transfer (HLCT) excited state for highly efficient deep red to near-infrared OLEDs
    Yu, Yuan
    Chao, Xun
    Xie, Mingliang
    Zhou, Yannan
    Ma, Chenglin
    Zhou, Huayi
    Sun, Qikun
    Pan, Yuyu
    Yang, Wenjun
    Xue, Shanfeng
    DYES AND PIGMENTS, 2023, 215
  • [42] Solution-processed deep-blue fluorophores based on phenanthroimidazole integrated with benzimidazole with HLCT character for efficient deep-blue organic light emitting devices
    Girase, Jaipal Devesing
    Shahnawaz
    Jou, Jwo-Huei
    Patel, Sabita
    Vaidyanathan, Sivakumar
    DYES AND PIGMENTS, 2022, 206
  • [43] Efficient deep-blue electroluminescence from Ce-based metal halide
    Yang, Longbo
    Du, Hainan
    Li, Jinghui
    Luo, Yiqi
    Lin, Xia
    Pang, Jincong
    Liu, Yuxuan
    Gao, Liang
    He, Siwei
    Kang, Jae-Wook
    Liang, Wenxi
    Song, Haisheng
    Luo, Jiajun
    Tang, Jiang
    NATURE COMMUNICATIONS, 2024, 15 (01)
  • [44] Efficient deep-blue non-doped organic light-emitting diode with improved roll-off of efficiency based on hybrid local and charge-transfer excited state
    Liu, Haichao
    Bai, Qing
    Li, Weijun
    Guo, Yachen
    Yao, Liang
    Gao, Yu
    Li, Jinyu
    Lu, Ping
    Yang, Bing
    Ma, Yuguang
    RSC ADVANCES, 2016, 6 (74): : 70085 - 70090
  • [45] Efficient red hybridized local and charge-transfer OLEDs by rational isomer engineering
    Zhou, Changjiang
    Liu, Yafei
    Sun, Zhuangzhuang
    Liu, He
    Xu, Lei
    Hu, Dehua
    Hu, Jun
    DYES AND PIGMENTS, 2022, 205
  • [46] An efficient solution-processable non-doped hybridized local and charge-transfer (HLCT) emitter for a simplified organic light-emitting diode
    Loythaworn, Thidarat
    Petdee, Sujinda
    Chasing, Pongsakorn
    Chantanop, Nuttapong
    Therdkatanyuphong, Pattarawadee
    Waengdongbung, Wijitra
    Sudyoadsuk, Taweesak
    Promarak, Vinich
    MATERIALS CHEMISTRY FRONTIERS, 2022, 6 (21) : 3225 - 3236
  • [47] Hybridized local and charge-transfer phosphafluorene oxide-based emitter for efficient nondoped blue organic light-emitting devices
    Xing, Longjiang
    Li, Yukang
    Chen, Qisheng
    Liu, Bo
    Deng, Zhiyu
    Ji, Shaomin
    Chen, Qian
    Yang, Qingdan
    Ye, Zecong
    Wang, Zhiheng
    Bi, Hai
    Wang, Yue
    Huo, Yanping
    Chen, Wen-Cheng
    DYES AND PIGMENTS, 2025, 235
  • [48] Through-space charge transfer dendrimers employing oxygen-bridged triarylboron acceptors for efficient deep-blue electroluminescence
    Du, Baoyun
    Wang, Xingdong
    Chen, Fan
    Yang, Qingqing
    Shao, Shiyang
    Wang, Lixiang
    Jing, Xiabin
    Wang, Fosong
    CHEMICAL COMMUNICATIONS, 2021, 57 (58) : 7144 - 7147
  • [49] Mild donor-π-mild acceptor (mD-π-mA) benzimidazole-based deep blue fluorophores with hybridized local and charge transfer (HLCT) excited states for OLEDs
    Girase, Jaipal Devesing
    Mukherjee, Susmita
    Chakrabarti, Tanwistha
    Patel, Sabita
    Perumal, Ajay
    Vaidyanathan, Sivakumar
    JOURNAL OF INFORMATION DISPLAY, 2022, 23 (03) : 221 - 234
  • [50] High-Efficiency Deep-Blue Solution-Processed Organic Light-Emitting Diodes Using Carbazole Dendrons Modified Hybridized Local and Charge-Transfer Emitters
    Chantanop, Nuttapong
    Saenubol, Atthapon
    Itsoponpan, Teerapat
    Prakanpo, Nipanan
    Wongkaew, Praweena
    Loythaworn, Thidarat
    Waengdongbung, Wijitra
    Sudyodsuk, Taweesak
    Promarak, Vinich
    CHEMPHOTOCHEM, 2025, 9 (01):
12345