以硝酸锌和六亚甲基四胺为主要原料, 采用简单、低温的水热法在预先用金红石二氧化钛薄膜修饰过的硅基体上生长了高取向性的ZnO纳米棒阵列. 运用扫描电子显微镜 (SEM), 透射电子显微镜(TEM)和X射线衍射(XRD)对产物的结构和形貌进行了表征. 并且讨论了溶液?浓度对ZnO形貌的影响. 测试结果表明, 在0.025mol/L的Zn(NO3)2·6H2O和C6H12N4水溶液中70℃反应4h后的ZnO纳米棒的平均直?径为100nm,平均长度为1μm, 属于六方纤锌矿结构且沿c轴择优取向生长. 并且对制备出的ZnO纳米棒阵列薄膜进行了室温下的荧光测试, 发现 ZnO纳米棒阵列膜在389nm处具有很强的紫外发射峰, 在466nm处有一个比较弱的发射峰.
ZnO nanorod arrays were obtained on a silicon wafer coated with rutile TiO2 thin films by a hydrothermal method. They were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and selected area electron diffraction (SAED). The effect of the concentration of the solution was also investigated. The results reveal ZnO nanorods prepared in mixture of 0.025mol/L of Zn(NO3)2·6H2O and C6H12N4 at 70℃ for 4h are about 100nm in average diameter and about 1μm in length, which possess wurtzite structure with a c-axis growth orientation. The room temperature photoluminescence of the as-prepared ZnO films exhibits a strong UV emission at about 389 nm and a weak emission at about 466nm.
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