英文论文
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文献类型
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Journal article (JA)
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题名
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Hierarchical ZnO/Si nanowire arrays as an effective substrate for surface-enhanced Raman scattering application
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作者
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Huang, Shengli (1, 2, 3); He, Bing (1, 2, 3); Yan, Xiaolan (1); Khan, Imran (1); Wang, Jiayuan (1); Gao, Mengyao (1); Lan, Jinshen (1); Li, Shuping (1, 4); Kang, Junyong (1)
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作者单位
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(1) Fujian Provincial Key Laboratory of Semicondctors and Applications, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen; 361005, China (2) State Key Lab of Silicon Materials, Zhejiang University, Hangzhou; 310027, China (3) Fujian Provincial Key Laboratory of Eco-Industrial Green Technology, Wuyi University, Fujian; 354300, China (4) Jiujiang Research Institute of Xiamen University, Jiujiang; 332000, China
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通讯作者地址
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Xiamen Univ, Fujian Prov Key Lab Semicondctors & Applicat, Collaborat Innovat Ctr Optoelect Semicond & Effic, Dept Phys, Xiamen 361005, Peoples R China.; Huang, SL (reprint author), Zhejiang Univ, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China.; Huang, SL (reprint author), Wuyi Univ, Fujian Prov Key Lab Ecoind Green Technol, Nanping 354300, Fujian, Peoples R China.
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Email
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ResearchID
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ORCID
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期刊名称
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Sensors and Actuators, B: Chemical
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出版社
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Elsevier B.V.
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ISSN
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0925-4005
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出版信息
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2018-11-10, 273:48-55.
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JCR
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1
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影响因子
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6.393
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ISBN
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基金
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National Key Research and Development Program of China [2016YFB0400801, 2016YFB0400800]; 863 program [2014AA032608]; National Natural Science Foundation of China [U1405253, 61227009, 61205051, 90921002]; Natural Science Foundation of Fujian Province of China [2016J01265, 2013J05097]; Fundamental Research Funds for the Central Universities [20720160015, 20720150032, 20720180014]; Fundamental Research Funds for Xiamen University [2016Y0589, 2016Y0591]
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会议名称
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会议地点
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会议开始日期
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会议结束日期
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关键词
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Chemical analysis; II-VI semiconductors; Nanowires; Raman scattering; Silicon; Silver nanoparticles; Substrates; Surface plasmon resonance; Wide band gap semiconductors; Zinc oxide
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摘要
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Hierarchical arrays of ZnO/Si nanowires were prepared through very convenient two-step solution method on silicon substrates. The tree-like nanowire structures showed high crystal quality, where well aligned Si nanowires were grown vertical to the substrate surface, whereas uniform assembly of branched ZnO nanowires was grown normal to the Si nanowires (backbones). Raman analysis indicated that among all the specimens having identical chemical compositions and dimensions but different forms (thin films or nanowires), Ag-decorated hierarchical arrays of ZnO/Si nanowires possessed the highest intensity peak in surface enhanced Raman scattering spectra. Such arrays demonstrated exceptional ability of detecting Rhodamine 6 G, limiting to a value as low as 1×10?8mol/L and an enhancement factor up to 1.5 × 104. Both, experimental designing and band structure analysis indicated that electromagnetic effect of the localized surface plasmon resonance of Ag nanoparticles caused eight times enhancement, whereas chemical effect of hierarchical arrays of ZnO/Si nanowires played a more critical role in the high Raman sensitivity. Our results would be helpful to better understand the enhancement mechanisms and meanwhile, could be extended for further potential applications of hierarchical semiconducting nanowires. ? 2018 Elsevier B.V.
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一级学科
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Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
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WOS入藏号
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WOS:000441519000007
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EI收录号
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20182405309906
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DOI
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10.1016/j.snb.2018.06.003
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ESI
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CHEMISTRY
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收录于
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SCIE, EI
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