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：
中国国家自然科学基金; 中国博士后科学基金;
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] 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
  • [42] Benzothiadiazole-Based Green Hybridized Local and Charge-Transfer (HLCT) Fluorophores as Solution-Processed Non-Doped Emitters for Simple Structured Electroluminescent Devices
    Kongsabay, Suwapat
    Loythaworn, Thidarat
    Petdee, Sujinda
    Chasing, Pongsakorn
    Funchien, Patteera
    Waengdongbung, Wijitra
    Wongkaew, Praweena
    Sudyodsuk, Taweesak
    Promarak, Vinich
    CHEMPHOTOCHEM, 2022, 6 (12)
  • [43] Solution Processable Deep-Blue OLEDs Based on Benzimidazole-TPA Conjugated through 9,9-Diethyl Fluorene (D-π-A) Luminophore with a Hybridized Local and Charge Transfer Excited State
    Nayak, Sandhya Rani
    Girase, Jaipal Devesing
    Nagar, Mangey Ram
    Jou, Jwo-Huei
    Vaidyanathan, Sivakumar
    JOURNAL OF PHYSICAL CHEMISTRY C, 2023, 127 (21) : 10291 - 10302
  • [44] Triphenylene-Based Emitters with Hybridized Local and Charge-Transfer Characteristics for Efficient Nondoped Blue OLEDs with a Narrowband Emission and a Small Efficiency Roll-Off
    Liu, Futong
    Cao, Gongyi
    Feng, Zijun
    Cheng, Zhuang
    Yan, Yan
    Xu, Yangze
    Jiang, Yixuan
    Chang, Yulei
    Lv, Ying
    Lu, Ping
    ACS APPLIED MATERIALS & INTERFACES, 2023, 15 (40) : 47307 - 47316
  • [45] Highly efficient blue-emissive electroluminescence: nondestructive color regulation effect of orthogonal cyano-substitution in hybrid locally-excited and charge-transfer (HLCT) backbone emitters
    Zhou, H.
    Wang, R.
    Zhang, S-T
    Cui, W.
    Ying, S.
    Sun, Q.
    Yang, B.
    Xue, S.
    Yang, W.
    Ma, Y.
    MATERIALS TODAY CHEMISTRY, 2022, 24
  • [46] Efficient blue fluorescent electroluminescence based on a tert-butylated 9,9′-bianthracene derivative with a twisted intramolecular charge-transfer excited state
    Li, Zhanfeng
    Sun, Yuxuan
    Li, Hui
    Ren, Jingkun
    Si, Changfeng
    Lv, Xiang
    Yu, Junsheng
    Wang, Hua
    Shi, Fang
    Hao, Yuying
    SYNTHETIC METALS, 2016, 217 : 102 - 108
  • [47] Fast spin-flip enables efficient and stable organic electroluminescence from charge-transfer states
    Cui, Lin-Song
    Gillett, Alexander J.
    Zhang, Shou-Feng
    Ye, Hao
    Liu, Yuan
    Chen, Xian-Kai
    Lin, Ze-Sen
    Evans, Emrys W.
    Myers, William K.
    Ronson, Tanya K.
    Nakanotani, Hajime
    Reineke, Sebastian
    Bredas, Jean-Luc
    Adachi, Chihaya
    Friend, Richard H.
    NATURE PHOTONICS, 2020, 14 (10) : 636 - +
  • [48] Solution-processable benzothiadiazole/triphenylamine-based hybridized local and charge-transfer (HLCT) hyper-structured molecular red emitters for OLEDs
    Yin, Xiaoyu
    Pu, Junrong
    Ma, Chen
    Wu, Yi
    Wang, Kunlun
    Liu, Yingliang
    Cao, Shaokui
    Su, Shi-Jian
    Xu, Shengang
    JOURNAL OF MATERIALS CHEMISTRY C, 2025, 13 (03) : 1477 - 1487
  • [49] Rational design of hybridized local and charge transfer emitters towards deep blue emission by incorporating extra cyano-based acceptor moieties
    Wang, Xinjian
    Zhao, Guimin
    Gao, Tao
    Zhang, Guanghao
    Chen, Haowen
    Zhou, Tao
    Zhang, Zhengmao
    Tian, Wenwen
    Jiang, Wei
    Sun, Yueming
    JOURNAL OF MATERIALS CHEMISTRY C, 2024, 12 (14) : 5019 - 5027
  • [50] Design of donor-acceptor-acceptor (D-A-A′)-type fluorescence emitters based on benzothiadiazole with the hybridized local and charge-transfer (HLCT) excited state feature for green to deep-red emitting OLEDs
    Xu, Shipan
    Du, Xuyang
    Yang, Xiaolong
    Hang, Huaiteng
    Xi, Jun
    Zhou, Guijiang
    Sun, Yuanhui
    ORGANIC ELECTRONICS, 2025, 137
12345