Controllable Synthesis of Well-aligned ZnO Nanorod Arrays on Varying Substrates via Rapid Electrodeposition
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2014年第11期
论文作者：Haibao Zhang Shaowei Jin Guotao Duan Jingjing Wang Weiping Cai
文章页码：1118 - 1123
摘 要：A facile and rapid electrodeposition route was developed to controllably synthesize well-aligned Zn O nanorod arrays on diverse substrates, such as seed-layer pre-formed, pristine indium tin oxide（ITO） and Si, using Zn（NO3）2$6H2O and hexamethylenetetramine（HMT） as the precursors. X-ray diffraction（XRD） and transmission electron microscopy（TEM） results indicated that seed-layer pre-modified of Zn O nanorod arrays（ZNRs） possessed single crystalline, a wurtzite crystal structure with preferential growth orientation along[0001] direction. The ZNRs on pre-modified Zn O seed-layer（ZSL） had diameters of 30e50 nm, and aligned vertically to the substrates. ZNRs on ZSL/ITO substrate exhibited a high transmittance（above 80%） in visible wavelength range and the red-shift of band gap energy. An electrochemical reaction model was proposed to explain the growth process of Zn O nanorods. Importantly, the rapid synthesis of ZNRs provided the feasibility of preparation of SERS（surface enhanced Raman scattering） nanocomposite within shorter time by a subsequent electrochemical etching.
Haibao Zhang1,2，Shaowei Jin1，Guotao Duan2，Jingjing Wang2，Weiping Cai2
1. Anhui Key Laboratory of Information Materials and Devices,School of Physics and Materials Science,Anhui University2. Key Lab of Materials Physics,Institute of Solid State Physics,Chinese Academy of Sciences
摘 要：A facile and rapid electrodeposition route was developed to controllably synthesize well-aligned Zn O nanorod arrays on diverse substrates, such as seed-layer pre-formed, pristine indium tin oxide（ITO） and Si, using Zn（NO3）2$6H2O and hexamethylenetetramine（HMT） as the precursors. X-ray diffraction（XRD） and transmission electron microscopy（TEM） results indicated that seed-layer pre-modified of Zn O nanorod arrays（ZNRs） possessed single crystalline, a wurtzite crystal structure with preferential growth orientation along[0001] direction. The ZNRs on pre-modified Zn O seed-layer（ZSL） had diameters of 30e50 nm, and aligned vertically to the substrates. ZNRs on ZSL/ITO substrate exhibited a high transmittance（above 80%） in visible wavelength range and the red-shift of band gap energy. An electrochemical reaction model was proposed to explain the growth process of Zn O nanorods. Importantly, the rapid synthesis of ZNRs provided the feasibility of preparation of SERS（surface enhanced Raman scattering） nanocomposite within shorter time by a subsequent electrochemical etching.
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