Kumari Puja, Roy Susanta Sinha, McLaughlin James
Nanotechnology and Integrated Bio-Engineering Centre (NIBEC), School of Engineering, University of Ulster, Jordanstown, Newtownabbey BT370QB, UK.
J Nanosci Nanotechnol. 2009 Jul;9(7):4367-70. doi: 10.1166/jnn.2009.m61.
Crystalline zinc oxide (ZnO) nanoneedles were grown on n type Si(100) substrates using different catalyst of variable thicknesses by using thermal evaporation of ZnO and graphite powder in a tube with an Ar as a carrier gas. During the growth the temperature of the substrate was kept around 900-980 degrees C. The growth of ZnO nanoneedles was done by the Vapour-Liquid-Solid (VLS) method. The catalysts used in the experiments were gold (Au) and cobalt (Co). The shape and morphology of the nanoneedles were investigated by Scanning Electron Microscopy (SEM), X-ray Photoelectron Spectroscopy (XPS) and Raman Spectroscopy. Different shaped nanoneedles were obtained on the catalysts. Raman scattering were used to characterize the structural properties and crystal quality of the obtained nanostructures. The composition details of nanoneedle were studied by XPS.
通过在以氩气作为载气的反应管中热蒸发氧化锌和石墨粉末，使用不同厚度的可变催化剂，在n型硅（100）衬底上生长出了结晶氧化锌（ZnO）纳米针。在生长过程中，衬底温度保持在900 - 980摄氏度左右。氧化锌纳米针的生长采用气-液-固（VLS）方法。实验中使用的催化剂是金（Au）和钴（Co）。通过扫描电子显微镜（SEM）、X射线光电子能谱（XPS）和拉曼光谱对纳米针的形状和形态进行了研究。在催化剂上获得了不同形状的纳米针。拉曼散射用于表征所获得纳米结构的结构特性和晶体质量。通过XPS研究了纳米针的组成细节。
