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Stably doped graphene transparent electrode with improved light-extraction for efficient flexible organic light-emitting diodes

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Abstract

Graphene-based flexible transparent electrodes (FTEs) are promising candidate materials for developing next-generation flexible organic light-emitting diodes (OLEDs). However, the quest for high-efficiency OLEDs is hindered by the low light-extraction and charge injection efficiencies of graphene electrode. Here, we combine the frustrated Lewis pair doping with nanostructure engineering to obtain high-performance graphene FTE. A p-type dopant aci-nitromethane-tris(pentafluorophenyl) borane (ANBCF) was synthesized and deposited on graphene FTE to form an aperiodic nanostructure, which not only improves the light-extraction but also stably p-dopes graphene to enhance its hole injection. The use of ANBCF-doped graphene as the anode enables high-efficiency flexible green OLEDs with external quantum efficiency (EQE) and power efficiency (PE) out-performing most flexible graphene OLEDs of comparable structure. This study provides a simple and effective pathway to fabricate highperformance graphene FTEs for efficient flexible OLEDs.

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Acknowledgements

The authors sincerely thank Dr. C. S. S. for his experimental assistance. This work was supported by the National Science Foundation of China (Nos. 52272051, 52172057, 52188101 and 52002375), Ministry of Science and Technology of China (No. 2021YFA1200804), Chinese Academy of Sciences (Nos. ZDBS-LYJSC027 and XDB30000000), Postdoctoral Science Foundation of China (Nos. 2020M670812 and 2020TQ0328), Liaoning Revitalization Talents Program (No. XLYC1808013), and Guangdong Basic and Applied Basic Research Foundation (No. 2020B0301030002).

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Author notes

  1. Lai-Peng Ma, Zhongbin Wu, and Yukun Yan contributed equally to this work.

Authors and Affiliations

  1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China

    Lai-Peng Ma, Yukun Yan, Dingdong Zhang, Shichao Dong, Jinhong Du, Hui-Ming Cheng & Wencai Ren

  2. School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, 110016, China

    Lai-Peng Ma, Yukun Yan, Dingdong Zhang, Shichao Dong, Jinhong Du, Hui-Ming Cheng & Wencai Ren

  3. Frontiers Science Center for Flexible Electronics, Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, Xi’an, 710072, China

    Zhongbin Wu

  4. State Key Laboratory of Luminescent Materials & Devices, South China University of Technology, Guangzhou, 510640, China

    Dongge Ma

  5. Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China

    Hui-Ming Cheng

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  1. Lai-Peng Ma
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Correspondence to Wencai Ren.

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Stably doped graphene transparent electrode with improved light-extraction for efficient flexible organic light-emitting diodes

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Ma, LP., Wu, Z., Yan, Y. et al. Stably doped graphene transparent electrode with improved light-extraction for efficient flexible organic light-emitting diodes. Nano Res. 16, 12788–12793 (2023). https://doi.org/10.1007/s12274-023-6176-y

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  • DOI: https://doi.org/10.1007/s12274-023-6176-y

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