Single crystalline ordered silicon wire/Pt nanoparticle hybrids for solar energy harvesting |
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| Authors: | Xin Wang Kui-Qing Peng Xiao-Ling Wu Shuit-Tong Lee |
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| Affiliation: | 1. Key Laboratory of Beam Technology and Material Modification of Ministry of Education and College of Nuclear Science and Technology, Department of Physics, Beijing Normal University, Beijing 100875, People’s Republic of China;2. Center of Super-Diamond and Advanced Films (COSDAF) and Department of Physics and Materials Science, City University of Hong Kong, SAR, Hong Kong |
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| Abstract: | In this work, we developed a method combining lithography and metal-catalyzed Si etching to fabricate highly ordered Si wire arrays with uniform coverage over an entire 4 in. wafer. The wire periodicity and dimensions depend on the lithography and the etching conditions. Photoelectrochemical measurements show that the as-prepared Si wire samples are photoactive owing to surface enhancement and become especially effective in solar-to-electrical conversion and water splitting after surface modification with Pt nanoparticles. |
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