電場對氧化鋅奈米線成長的影響

• Main Authors: Yu-Chen Tsai, 蔡玉珍
• Other Authors: 陳銘堯
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/35281514863567351574

碩士 === 國立臺灣大學 === 物理研究所 === 93 === ZnO nanowires were synthesized by vapor transport process on sapphire(110) substrate at 900℃ with bias applied. After coated with a thin film of Au, the substrate was placed into the furnace together with the powder mixed by ZnO and graphite powder. During the growth, an airflow of oxygen and argon were maintained in the quartz tube. Nanowires with bias applied or not during the growth were investigated to find the influence of the electric field. Morphology and the scale of these nanowires were studied by scanning electron microscopy, structure properties and orientation were studied by X-ray diffraction, and the photoluminescence at different temperature were observed. The sample that grew in the electric field were more narrow in diameter, higher in length, and better aligned compared with the sample without electric field, and it also shows a better optical property revealed by the PL spectra.