Growth Mechanism and Characterization of ZnO Radial Microspheres and Comb-Like Microbelts
Abstract: ZnO radial microspheres and comb-like microbelts were synthesized by Chemical Vapor Deposition (CVD). The synthesized ZnO products are hexagonal wurtzite structured. The formation of ZnO radial microspheres follows a two-step process: one is nucleation and another is growth. It is found that the formation of the sphere-shaped liquid Zn droplets before adding oxygen is a key factor to control the morphology of the ZnO radial microspheres. The formation of the comb-like microbelts follows the process: the microbelt is formed by a vapor-solid (VS) growth mechanism firstly, and then the nanobelts on one side are grown by a self-catalysis growth paralleling to the (0001) polar surface. Photoluminescence (PL) spectrum shows two typical emission peaks at ~390 nm and at ~495 nm which were assigned to UV emission and green emission, respectively.
文章引用: 吴 亭 , 许永杰 , 李新宇 , 张津瑞 , 陈运生 , 陈镫善 , 吉愈旭 (2017) ZnO辐射微米球和微米带梳的特征及生长机理。 材料科学， 7， 371-376. doi: 10.12677/MS.2017.73050
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