Radial n–i–p structure silicon nanowire-based solar cells on flexible stainless steel substrates

Authors

  • Xiaobing Xie,

    Corresponding author
    1. State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
    • Phone: +86 10 82304237, Fax: +86 10 82304263
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  • Xiangbo Zeng,

    1. State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
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  • Ping Yang,

    1. State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
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  • Hao Li,

    1. State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
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  • Jingyan Li,

    1. State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
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  • Xiaodong Zhang,

    1. State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
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  • Qiming Wang

    1. State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
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Abstract

Radial n–i–p structure silicon nanowires-(SiNWs) based solar cells on flexible stainless steel substrates have been fabricated by plasma-enhanced chemical vapor deposition (PECVD). The highest open-circuit voltage (Voc) and short-circuit current density (Jsc) for AM 1.5 illumination were 0.62 V and 13.36 mA cm−2, respectively, at a maximum power conversion efficiency of 3.56%. The optical reflectance of the SiNWs solar cells over a broad rang of wavelengths (300–1000 nm) is reduced by ∼80% in average compared to planar silicon thin film cells. The external quantum efficiency (EQE) measurements show that the EQE response of SiNWs solar cells is improved greatly in the wavelength range of 550–750 nm compared to corresponding planar silicon thin film solar cells.

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