Growth of ZnO Nanostructures by Using Ultrasonic Spray Chemical Vapor Deposition with a Au Catalyst
Growth of ZnO Nanostructures by Using Ultrasonic Spray Chemical Vapor Deposition with a Au Catalyst
复制标题
Au 催化剂超声喷雾化学气相沉积法生长 ZnO 纳米结构
DOI：
10.3938/jkps.53.3025
复制
发表时间：
2008
影响因子：
0.6
通讯作者：
S. Fujita
中科院分区：
文献类型：
--
作者：
H. Nishinaka;T. Kawaharamura;S. Fujita
以金为催化剂，采用超声喷雾化学气相沉积法制备了氧化锌纳米棒。生长采用气-液-固三相生长模式。低倍和高分辨电子显微镜观察表明，所制备的氧化锌纳米棒无层错，为单晶。高分辨电子显微镜分析表明，在900℃下生长的氧化锌纳米棒的晶格长度为0.16 nm，生长方向为[11]。氧化锌纳米棒的直径几乎取决于金薄膜中聚集的金颗粒的直径。氧化锌纳米棒的直径比金颗粒的直径略大，这是因为氧化锌纳米棒不仅沿纳米棒的方向生长，而且还沿直径方向生长。氧化锌纳米棒室温光致发光以近带边发光为主，深能级发射较弱。
ZnO nanorods were grown by using an ultrasonic spray chemical vapor deposition method with a Au catalyst. The growth was performed in the vapor-liquid-solid growth mode. The lowmagnification and the high-resolution transmission electron microscopy (TEM) observation revealed that the ZnO nanorods had no stacking faults and were single crystals. The high-resolution TEM showed that the lattice length of the ZnO nanorods grown at 900 C was 0.16 nm and that the growth direction was [11¯ The diameters of the ZnO nanorods almost depended on those of the Au particles that aggregated from a Au thin film. The diameters of the ZnO nanorods were slightly bigger than those of the Au particles because the ZnO nanorods grew not only in the direction along the nanorods but also in the direction of the diameter. The room-temperature photoluminescence emission of the ZnO nanorods was dominated by a near band-edge luminescence with weak deep-level emissions.