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High density Si/ZnO core/shell nanowire arrays for photoelectrochemical water splitting
Ji, Jiuyu1; Zhang, Wenhua2; Zhang, Heqiu1; Qiu, Yu1; Wang, Yan3; Luo, Yingmin1; Hu, Lizhong1
刊名JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
2013-09-01
DOI10.1007/s10854-013-1272-5
24期:9页:3474-3480
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology ; Physical Sciences
类目[WOS]Engineering, Electrical & Electronic ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
研究领域[WOS]Engineering ; Materials Science ; Physics
关键词[WOS]VISIBLE-LIGHT ; PHOTOVOLTAIC APPLICATIONS ; TITANIUM-DIOXIDE ; SILICON ; PHOTOCATALYST ; ABSORPTION ; ZNO ; FABRICATION ; ELECTRODE ; SURFACE
英文摘要Si/ZnO core/shell nanowire (NW) arrays were fabricated using atomic layer deposition of ZnO shell on n-Si NW arrays prepared by metal assisted electroless etching method. Scanning electron microscopy, transmission electron microscopy and X-ray diffraction were utilized to characterize the core/shell structures. Water splitting performance of the core/shell structures was preliminarily studied. The Si/ZnO core/shell NW arrays yielded significantly higher photocurrent density than the planar Si/ZnO structure due to their low reflectance and high surface area. The photoelectrochemical efficiency was found to be 0.035 and 0.002 % for 10 mu m-long Si/ZnO NW array and planar Si/ZnO sample, respectively. These results suggested that core/shell structure is superior to planar heterojunction for PEC electrode design. We demonstrated the dependence of photocurrent density on the length of the core/shell array, and analyzed the reasons why longer NW arrays could produce higher photocurrent density. The relationship between the thickness of ZnO shell and the photoconversion efficiency of Si/ZnO NW arrays was also discussed. By applying the core/shell structure in electrode design, one may be able to improve the photoelectrochemical efficiency and photovoltaic device performance.
语种英语
WOS记录号WOS:000323249800049
引用统计
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/137713
专题中国科学院大连化学物理研究所
作者单位1.Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
3.Liaoning Normal Univ, Sch Phys & Elect Technol, Dalian 116029, Peoples R China
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Ji, Jiuyu,Zhang, Wenhua,Zhang, Heqiu,et al. High density Si/ZnO core/shell nanowire arrays for photoelectrochemical water splitting[J]. JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,2013,24(9):3474-3480.
APA Ji, Jiuyu.,Zhang, Wenhua.,Zhang, Heqiu.,Qiu, Yu.,Wang, Yan.,...&Hu, Lizhong.(2013).High density Si/ZnO core/shell nanowire arrays for photoelectrochemical water splitting.JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS,24(9),3474-3480.
MLA Ji, Jiuyu,et al."High density Si/ZnO core/shell nanowire arrays for photoelectrochemical water splitting".JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 24.9(2013):3474-3480.
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