ZnO纳米棒水热法制备及其发光性能.pdfVIP

13 5 V o l13, N o5 2007 10 JOURNA L O F FUNCT IONA L M ATER IALS AND DEV ICES O ct., 2007 : 1007 - 4252 2007) 05- 0453- 06 ZnO 靳福江, 李珍, 李飞 中国地质大学材料科学与化学工程学院, 武汉 430074) : 采用水热法在玻璃基 上成功制备出了 ZnO 纳米棒用 X 射线衍射仪 XRD) 和扫描电子显 微镜 SEM ) 对 ZnO 纳米棒的晶体结构和表面形貌进行了表征, 初步探讨了 ZnO 纳米棒的生长机 理; 同时对 ZnO 纳米棒的光致发光性能进行测量, 分析了水热温度和反应时间对 ZnO 纳米棒光致 发光性能的影响结果表明: ZnO 纳米棒呈现六方纤锌矿结构, 具有沿 002) 晶面择优生长特征; 随着水热反应温度的升高, ZnO 纳米棒的发光强度逐渐增强; 随着反应时间的延长, ZnO 纳米棒发 光强度在 1~ 3 h 内增强, 而在 3~ 10 h 反而减弱 : ZnO 纳米棒; 水热法; 生长机理; 发光性能 : O612, O734 : A Hydrothermal synthesis and lum inescence perform ance of ZnO nanorods J IN Fujiang, L I Zhen, L I Fe i Co llege of M aterial and Chem ical Eng ineering, GeosciencesUn iversity of China, W uhan 430074, China) Abstract: zinc ox ide nanorods had been successfully prepared by hydro therm al synthesis on g lass sub strates. X - ray d iffract ion XRD) and scanning e lectron m icroscopy SEM ) w ere used to character ize the ZnO nanorods. SEM mi ag ines indicated that ZnO hexagona l nanorods grew along c ax is on g lass sub strates and g row th m echanism o f ZnO nanorodsw as d iscussed. Photo lum inescence spectra and analyse lu m inescence m echanism of ZnO nanorods w ere m easured. T he resu lt show ed that lum inescent intensity o f ZnO nanorods enhanced w ith hydrotherm al tem perature w h ile lum inescent intensity o f ZnO nano rods en hanced w ith the reaction tmi e prolong, in 1~ 3h, but becam e w eak in 3~ 10h. K ey words: ZnO nano rods; hydro therm a l sgnthesis; grow n m echanism; lum inescent intensity 0 , 3. 37ev, ZnO -