Highly Oriented ZnO Rod Arrays on Si Substrates from Aqueous Solution  

作　　者：LIU Changsong LI Zhiwen ZHANG Qifeng 

机构地区：[1]School of Mechanical Engineering, Qingdao Technological University, Qingdao 266033, China [2]Department of Electronics, Peking University, Beijing 100871, China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2008年第2期189-193,共5页武汉理工大学学报（材料科学英文版）

基　　金：the National Natural Science Foundation of China(No.50702029);Shandong Provincial Education Department(No.J05D08);Natural Science Foundation of Qingdao(No.05-1-JC-89)

摘　　要：Ordered zinc oxide （ZnO） rod arrays with very high orientation were fabricated on Si substrates by using a solution method. The substrate surfaces were functionalized by Self-Assembly Monolayers （SAMs）. In the very early growth stage, the oriented ZnO crystals had already grown, which appeared to be the main reason why ZnO nanorods showed very high orientation. The un-dense and un-uniform SAMs provided a surface that was heterogeneous to ZnO nucleation. Consequently, highly oriented ZnO rods were selectively grown on the ＂coin-like＂ SAM-uncovered regions. The route developed here can provide some helpful information to control the nucleation and orientation of ZnO in aqueous solution. Also, the site-selective growth mechanisms can indicate a clue to grow patterned highly oriented ZnO nanorod arrays by the organic template.Ordered zinc oxide （ZnO） rod arrays with very high orientation were fabricated on Si substrates by using a solution method. The substrate surfaces were functionalized by Self-Assembly Monolayers （SAMs）. In the very early growth stage, the oriented ZnO crystals had already grown, which appeared to be the main reason why ZnO nanorods showed very high orientation. The un-dense and un-uniform SAMs provided a surface that was heterogeneous to ZnO nucleation. Consequently, highly oriented ZnO rods were selectively grown on the ＂coin-like＂ SAM-uncovered regions. The route developed here can provide some helpful information to control the nucleation and orientation of ZnO in aqueous solution. Also, the site-selective growth mechanisms can indicate a clue to grow patterned highly oriented ZnO nanorod arrays by the organic template.

关 键 词：zinc oxide （ZnO） self assembly monolayers （SAMs） crystal growth nanostructures site-selective growth solution method 

分 类 号：O781[理学—晶体学]