A Structured Macroporous Silicon/Graphene Heterojunction for Efficient Photoconversion

Authors

  • Hongtao Yu Dr.,

    1. School of Environmental Science and Technology, Key Laboratory of Industrial Ecology and Environmental, Engineering (MOE), Dalian University of Technology, Dalian 116024 (P. R. China), Fax: (+86) 411-8470-6263
    Search for more papers by this author
  • Shuo Chen Dr.,

    1. School of Environmental Science and Technology, Key Laboratory of Industrial Ecology and Environmental, Engineering (MOE), Dalian University of Technology, Dalian 116024 (P. R. China), Fax: (+86) 411-8470-6263
    Search for more papers by this author
  • Xinfei Fan,

    1. School of Environmental Science and Technology, Key Laboratory of Industrial Ecology and Environmental, Engineering (MOE), Dalian University of Technology, Dalian 116024 (P. R. China), Fax: (+86) 411-8470-6263
    Search for more papers by this author
  • Xie Quan Prof. Dr.,

    1. School of Environmental Science and Technology, Key Laboratory of Industrial Ecology and Environmental, Engineering (MOE), Dalian University of Technology, Dalian 116024 (P. R. China), Fax: (+86) 411-8470-6263
    Search for more papers by this author
  • Huimin Zhao Dr.,

    1. School of Environmental Science and Technology, Key Laboratory of Industrial Ecology and Environmental, Engineering (MOE), Dalian University of Technology, Dalian 116024 (P. R. China), Fax: (+86) 411-8470-6263
    Search for more papers by this author
  • Xinyong Li Prof. Dr.,

    1. School of Environmental Science and Technology, Key Laboratory of Industrial Ecology and Environmental, Engineering (MOE), Dalian University of Technology, Dalian 116024 (P. R. China), Fax: (+86) 411-8470-6263
    Search for more papers by this author
  • Yaobin Zhang Dr.

    1. School of Environmental Science and Technology, Key Laboratory of Industrial Ecology and Environmental, Engineering (MOE), Dalian University of Technology, Dalian 116024 (P. R. China), Fax: (+86) 411-8470-6263
    Search for more papers by this author

  • This work was supported by National Natural Science Foundation of China (No. 20837001, No. 20525723), Education Department of Liaoning Province (No. 2008T224), and Program for Changjiang Scholars and Innovative Research Team in University (IRT0813).

Abstract

original image

New roles of graphene as a protective layer and transparent charge collector are demonstrated in a structured macroporous Si (MPSi)/graphene (Gr) heterojunction, which shows stable photocurrent (see picture) and a maximum photoconversion efficiency of 2.36 % in 0.05 M H2SO4 without adding a redox pair.

Ancillary