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Flexible organic light-emitting devices with copper nanowire composite transparent conductive electrode

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Abstract

Applying copper nanowires (CuNWs) composite transparent conductive electrode (CTCE) as transparent conductive anode, a flexible organic light-emitting device (OLED) is demonstrated in this paper. Ultralong CuNWs were synthesized by a simple hydrothermal method. The random conductive grid of CuNWs was transferred to the surface of flexible substrates by vacuum filtration method. In order to reduce the surface roughness and improve work function, polymethyl methacrylate (PMMA) solution and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) solution were spin-coated on the surface of CuNW transparent conductive electrode (TCE) in turn. The CuNW/PMMA/PEDOT:PSS CTCE was applied to an OLED, and the experiment shows that the OLED was of high efficiency. On comparing the OLED with PEDOT:PSS TCE, the maximum brightness and maximum current density of the OLED with CuNW/PMMA/PEDOT:PSS CTCE were increased by 104% and 4 times, respectively.

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Acknowledgements

This work is supported by the National Natural Science Foundation of China (Nos. 61571103 and 11775047), the Science and Technology Project Foundation of Zhongshan City (No. 2017B1016) and the Innovation Team of Zhongshan City (No. 170615151170710).

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Authors and Affiliations

  1. School of Electronic and Information Engineering, University of Electronic Science and Technology of China Zhongshan Institute, Zhongshan, 528402, China

    Yaxiong Wang, Ping Liu, Honghang Wang, Jianghao Wang & Feng Chi

  2. School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China

    Yaxiong Wang & Jianghao Wang

  3. School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, China

    Ping Liu & Baoqing Zeng

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  1. Yaxiong Wang
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  2. Ping Liu
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  3. Honghang Wang
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  4. Baoqing Zeng
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  5. Jianghao Wang
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  6. Feng Chi
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Correspondence to Ping Liu.

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Wang, Y., Liu, P., Wang, H. et al. Flexible organic light-emitting devices with copper nanowire composite transparent conductive electrode. J Mater Sci 54, 2343–2350 (2019). https://doi.org/10.1007/s10853-018-2986-9

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