标题：Mushroom-like ZnO Nanostructures Grown on Tungsten Substrate
作者：Xiang Wu;Boxiang Jia;Fengyu Qu;Quanqin Zhao
作者机构：[Wu, X] College of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China, College of Chemistry and Chemical Engineering, Harbi 更多
通讯作者地址：[Wu, X]Shandong Univ, Coll Chem & Chem Engn, Jinan 250100, Peoples R China.
关键词：Nanostructures;Optical property;Thermal evaporation;ZnO
摘要：In this work, we have developed a facile but efficient method to prepare mushroom-like Zinc oxide (ZnO) nanostructures with a flat cap in the diameter of around 1μm, by thermal evaporation of the mixture of ZnS and carbon powder on a tungsten substrate. The mushroom-like nanostructures were characterized by using advanced techniques such as scanning electron microscope (SEM), X ray diffraction (XRD) and Raman spectroscopy. The optical properties of such product were also investigated by photoluminescence spectroscopy, revealing a strong green emission band emerged, which may be attributed to the oxygen vacancies and various surface states. Finally the formation and growth mechanisms for the mushroom-like ZnO nanostructures were proposed and discussed.