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Non-doped white organic light-emitting diodes based on ultra-thin emitting layer with aggregation-induced emission

Authors

  • Xu-Peng Wang,

    1. Engineering Center for Flat-Panel Displays and Solid-State Lighting of Jiangsu Province, School of Materials Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
    2. Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
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  • Yan Qian,

    1. Engineering Center for Flat-Panel Displays and Solid-State Lighting of Jiangsu Province, School of Materials Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
    2. Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
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  • Tong-Jun Zhu,

    1. Engineering Center for Flat-Panel Displays and Solid-State Lighting of Jiangsu Province, School of Materials Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
    2. Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
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  • Min-Min Cai,

    1. Engineering Center for Flat-Panel Displays and Solid-State Lighting of Jiangsu Province, School of Materials Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
    2. Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
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  • Bao-Xiu Mi,

    1. Engineering Center for Flat-Panel Displays and Solid-State Lighting of Jiangsu Province, School of Materials Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
    2. Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
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  • Xue-Yin Jiang,

    1. Key Laboratory of Advanced Display and System Applications (Shanghai University), Ministry of Education, Shanghai 200444, P.R. China
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  • Zhi-Qiang Gao,

    Corresponding author
    1. Engineering Center for Flat-Panel Displays and Solid-State Lighting of Jiangsu Province, School of Materials Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
    • Phone: +86 25 85866331, Fax: +86 25 85866396
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  • Wei Huang,

    1. Key Laboratory for Organic Electronics and Information Displays (KLOEID), Institute of Advanced Materials (IAM), Nanjing University of Posts and Telecommunications, Nanjing 210046, P.R. China
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  • Zhi-Lin Zhang

    1. Key Laboratory of Advanced Display and System Applications (Shanghai University), Ministry of Education, Shanghai 200444, P.R. China
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Abstract

Based on two aggregation-induced light-emitting materials, N-(4-(benzo[d]thiazol-2-yl)-3-hydroxyphenyl) anthracene-9-carboxamide for yellow emission and N-(4-(benzo[d]oxazol-2-yl)-4-tert-butylbenzamide for Blue emission, non-doped white organic light-emitting diodes have been realized. The maximum efficiency of 2.2 cd/A and the Commission International de L'Eclairage coordinates of (0.32, 0.33) are achieved. Moreover, the device efficiency and color coordinates change slightly with increasing driving current density up to 500 mA/cm2, showing a good color stability and a small efficiency roll-off. This may due to both better confinement of excitons within the emitting layer and the utilization of a thin layer of emitting material with aggregation-induced emission.

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