热蒸发法制备纳米结构ZnO及其生长机理

热蒸发法制备纳米结构ZnO及其生长机理 Synthesis and Growth Mechanism of ZnO Nanostructure by Thermal Evaporation Process 李育洁 LI Yujie 1 first-author 张海明 ZHANG Haiming 1 胡国锋 HU Guofeng 1 李晓洁 LI Xiaojie 1 高波 GAO Bo 1 朱彦君 ZHU Yanjun 1 天津工业大学理学院 天津工业大学理学院 School of Science,Tianjin Polytechnic University School of Science,Tianjin Polytechnic University 用热蒸发法于700℃在硅衬底上制备了纳米线、多针状、四脚针状结构的ZnO,研究了衬底与热源间的距离对ZnO形貌的影响.用扫描电镜（SEM）表征了ZnO的形貌,当衬底距热源20mm时,ZnO呈现四脚针状且具有很细的尖端,直径为50nm.X射线衍射（XRD）,微区Raman图谱表明四脚针状ZnO是高纯的六角纤锌矿结构.另外,对ZnO不同形貌的生长机理进行了初步研究. ZnO nanowires,multipods,and tetrapods nanostructures were synthesized on silicon substrate at 700 ℃ through a thermal evaporation method under air ambient conditions. The effects of the distance between substrate and heat source upon ZnO morphologies were investigated. Scanning electron microscopy （SEM） result shows that ZnO tetrapod has a sharp tip with the diameter of 50 nm when the distance is 20 mm. X-ray diffraction （XRD） and micro-Raman results indicate that ZnO tetrapods are highly pure hexagonal wurzite structure. The growth mechanisms of different ZnO morphologies were also studied. ZnO 四脚针 热蒸发法 生长机理 ZnO tetrapod thermal evaporation growth mechanism 10.14188/j.1671-8836.2010.01.009 TB383.1 天津市自然科学基金资助项目（09JCYBJC04400） 2010-01-01 2021-04-01 1 56