Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 36, Issue 23, Pages 15153-15159Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2011.07.145
Keywords
Core/shell nanowire arrays; Silicon; Zinc oxide; Water splitting; Hydrogen production; Photocatalysts
Categories
Funding
- National Natural Science Foundation of China [50990063, 50973095, 51011130028]
- Fund for the Major State Basic Research Development Program [2007CB613402]
- Zhejiang Province Key Scientific and Technical Innovation Team [2009R50004]
- Fundamental Research Funds for the Central Universities [2010QNA4013]
Ask authors/readers for more resources
n-Type Si nanowire (NW) arrays coated with a thin layer of ZnO were fabricated via a two-step route combined with metal-assisted chemical etching and sol-gel processes. Scanning electron microscopy, transmission electron microscopy and X-ray diffraction were utilized to characterize the core/shell structure. The obtained Si/ZnO core/shell NW arrays exhibit about 8% optical reflectance in visible region, implying good optical absorption. Water splitting performance of Si/ZnO NW arrays was studied. The photoconversion efficiency for Si/ZnO NW arrays reaches 0.38% upon exposure to the illumination with a light intensity of 10 mW/cm(2), which is higher than those of the planar bilayer structure of Si/ZnO (0.19%) and the pure planar ZnO (0.09%). The relationship between the illumination intensity and the photoconversion efficiency of Si/ZnO NW arrays was also discussed. Copyright (C) 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available