Imaging Science and Photochemistry ›› 2015, Vol. 33 ›› Issue (4): 307-314.DOI: 10.7517/j.issn.1674-0475.2015.04.307

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Fabrication and Photocatalytic Study of Flexible Silicon Nanowires Array

ZHANG Bingchang1,2, WANG Hui1, LI Fan1, ZHANG Xiaohong1   

  1. 1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China;
    2. University of Chinese Academy of Sciences, Beijing 10049, P. R. China
  • Received:2015-04-09 Revised:2015-04-30 Online:2015-07-16 Published:2015-07-16


Silicon nanowires array is an important material for utilizing solar energy to solve energetic and environmental problems. However, there are few methods in fabricating flexible silicon nanowires array, which could be used in flexible electronics and biocompatibility devices. In this work, flexible silicon nanowires arrays with different polymer thickness are successfully fabricated through chemical vapor deposition and polymer-assistant transfer method. The influence of polymer thickness on the photocatalytic activity of flexible silicon nanowires array is also studied. The result reveals that the photocatalytic activity of flexible silicon nanowires array would increase as the thickness of polymer decreases. Thus, flexible silicon nanowires array with polymer thickness as low as 5 μm fabricated in this work is potential as the photoelectrode in highly effective flexible solar cells and water-splitting photoelectrochemical system. And the result also provides foundation for designing flexible nanowires array with high solar energy transferring capability.

Key words: flexibility, silicon nanowires array, photocatalysis, chemical vapor deposition