Post Annealing and MgO Doping of ZnO nanorods

• Main Authors: Hung-Chou Liao, 廖泓洲
• Other Authors: San-Yuan Chen
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/50716037930386502838

碩士 === 國立交通大學 === 材料科學與工程系所 === 93 === Single-crystalline zinc oxide (ZnO) nanorod array was synthesized on Si substrate coated with buffered ZnO by low-temperature chemical solution method. The physical and optical properties of annealed ZnO nanorods and MgO-doped ZnO nanorod arrays were investigated. The post annealing dramatically improve the optical quality of the ZnO nanorods. The ratio of the intensity of ultraviolet (UV) emission (IUV) to that of deep level emission (IDLE) can be enhanced to 30 times as those of original ones. For MgO-doped ZnO nanorods, there was blue shift phenomenon in UV emission. The obtained results implied that magnesium atoms can diffuse into nanostructures to form chemical bonds with zinc and oxygen ions through the paths of defects. This study demonstrated that low- temperature solution synthesis in combination with annealing treatment can be used to synthesize highly arrayed and MgO-doped zinc oxide nanorods.