Aligned Carbon Nanotubes for High-Efficiency Schottky Solar Cells

Authors

  • Jiangtao Di,

    1. Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences, Suzhou 215123, China
    2. University of Chinese Academy of Sciences Beijing 100049, China
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  • Zhenzhong Yong,

    1. Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences, Suzhou 215123, China
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  • Xinhe Zheng,

    1. Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences, Suzhou 215123, China
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  • Baoquan Sun,

    1. Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices Institute of Functional Nano & Soft Materials (FUNSOM) Soochow University 199 Ren'ai Road, Suzhou 215123, China
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  • Qingwen Li

    Corresponding author
    1. Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences, Suzhou 215123, China
    • Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-tech and Nano-bionics Chinese Academy of Sciences, Suzhou 215123, China.
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Abstract

The development of low-cost and high-efficiency silicon Schottky solar cells has drawn considerable interest in recent years. A facial approach for the fabrication of carbon nanotube–silicon (CNT–Si) Schottky solar cells by using aligned double-walled CNTs drawn from a CNT array is demonstrated. The aligned CNTs help to form high CNT–Si junction density and provide efficient charge-transport paths. The power conversion efficiency (PCE) reaches 10.5%, which is higher than that of solar cells fabricated using pristine and random CNT networks. Furthermore, the cell fabrication is scalable, and the solar cells fabricated in one batch show very small PCE fluctuations.

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