四足棒球棒状ZnO纳/微米材料的制备及其生长机理的研究  

Synthesis and Growth Mechanism of ZnO Tetrapod Nano/Microbaseball-bats

作　　者：王福学[1] 蔡小龙[1] 闫大为[1] 肖少庆[1] 顾晓峰[1] 

机构地区：[1]江南大学电子工程系轻工过程先进控制教育部重点实验室,无锡214122

出　　处：《人工晶体学报》2014年第7期1678-1682,共5页Journal of Synthetic Crystals

基　　金：江苏省自然科学基金(BK2012110);中央高校基本科研业务费专项资金(JUSRP11230,JUSRP51323B);江苏高校优势学科建设工程(PAPD);江苏省六大人才高峰(DZXX-053)

摘　　要：采用简单的碳热蒸发法在硅衬底上制备了四足棒球棒状ZnO纳/微米材料,结合光致发光谱(PL)、阴极射线发光谱(CL)、XRD谱、SEM以及TEM等分析了该材料的结构和发光特性。结果表明,制备的单晶ZnO纳/微米材料具有纤锌矿结构,并且沿着c轴方向择优生长;每个纳/微米结构有四个足,每个足的直径约为0.2～1.5μm,长度约为3～10μm;室温光致发光谱中包含一个384 nm附近的较弱的近紫外发光峰和一个519 nm附近的较强的绿色发光峰;在单个四足状ZnO纳/微米结构不同位置获得的阴极射线发光谱也被用于对比分析。最后讨论了Ni缓冲层的作用及ZnO四足棒球棒状的生长机理。The tetrapod ZnO nano /microstructures were synthesized on the Si（100） substrates using carbon-thermal evaporation. The structural and optical properties of the samples were characterized by Xray diffraction（XRD）,scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,photoluminescence（PL） and cathodoluminescence（CL） spectroscopy. The results indicate that the asprepared tetrapod ZnO nanostructures have a single crystalline wurtzite hexagonal structure preferentially oriented in the c-axis direction. Each nano /microstructures has four legs which are about 3-10 μm in length and 0. 2-1. 5 μm in diameter. The PL measurements of the tetrapod ZnO nano /microstructures reveal a UV peak centered at 384 nm and a green peak centered at 519 nm. For comparative analysis,CL spectra obtained from different regions of an individual tetrapod were also investigated. In the end,the functions of the Ni buffer layer and the growing mechanism of the ZnO nano /microbaseball-bats were discussed.

关 键 词：ZNO 纳 微棒球棒 阴极射线发光 光致发光 

分 类 号：O641[理学—物理化学]