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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
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  • 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
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  • 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
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  • 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
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  • 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
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  • 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
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  • 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
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  • 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

Graphen in neuer Rolle als Schutzschicht und transparenter Ladungssammler: So präsentiert sich ein Heteroübergang zwischen strukturiertem makroporösem Silicium (MPSi) und Graphen (Gr; siehe TEM-Bilder), der sich durch einen stabilen Photostrom (siehe Diagramm) und eine maximale Lichtumwandlungseffizienz von 2.36 % in 0.05 M H2SO4 ohne zusätzliches Redoxpaar auszeichnet.

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