ZnO纳米棒的低温制备及其光学性能表征(英文)

Synthesis at a Low Temperature and Optical Properties of ZnO Nanorods

在低温条件下,利用化学溶液沉积法(CBD)成功在ITO导电玻璃衬底上生长出近一维ZnO纳米棒.本文不仅研究了生长条件,如Zn2+摩尔浓度和生长时间对纳米棒结构和形貌的影响,还利用不同衬底(Si衬底、ITO导电玻璃和玻璃)进行实验,从而研究了同一生长条件下,衬底对样品形貌和光学性能的影响.结果表明,随着Zn2+摩尔浓度的增大,纳米棒的尺寸也随着增大;当Zn2+摩尔浓度为0.1M时,纳米棒的纵横比随着生长时间的增加而减小;衬底对样品的形貌和光学特性有一定影响.PL测试表明硅衬底上生长的纳米棒有较好的光学性能.

ZnO nanorods were grown on ITO conducting glass by the chemical solution deposition method （CBD） at a low temperature（90℃）. The effects of different conditions, such as different molar concentration of zinc nitrate and reaction time, especially the substrates on morphologies and photoluminesecnce properties of ZnO nanorods were studied. The size of ZnO nanorods increased with molar concentration of zinc nitrate, and the nanorods with different aspect ratios also formed through tuning the reaction time when the molar concentration was 0.1 M. The length of nanorods increased significantly with the reaction time, but the thickness of the fdm deposited on the substrate only slightly increased. In addition, the nature of the substrate was found to have effect on the crystal structure and morphology of the resultant ZnO nanorods. Photoluminesecnce measurements showed that the nanorods grown on the Si substrate had a relatively stronger UV emission compared to that of the ITO conducting glass and bare glass.