回力标形状的ZnO纳米棒的制备和光致发光特性(英文)  

Fabrication and Photoluminescence of Boomerang-like ZnO Nanorods

作　　者：王福学[1] 蔡小龙[1] 闫大为[1] 朱兆旻[1] 顾晓峰[1] 

机构地区：[1]江南大学电子工程系,江苏无锡214122

出　　处：《固体电子学研究与进展》2014年第3期236-242,共7页Research & Progress of SSE

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

摘　　要：在1 050°C条件下,利用碳热蒸发的方法在NiO覆盖的Si(100)衬底上制备了回力标形状的ZnO纳米棒,这是一种新的ZnO的纳米结构。通过结构分析,发现这种回力标形状的ZnO纳米棒具有纤锌矿结构。室温的光致发光图谱中有两个发光峰:380nm附近的弱近紫外发光峰和524nm及575nm附近较宽的绿光发光峰。拉曼谱以及X电子能量谱也用于研究其性质。最后讨论了缓冲层的作用及ZnO纳米棒的生长机理。Novel boomerang-like ZnO nanorods are fabricated on NiO-coated Si （100） substrates by the carbon-thermal evaporation at 1 050 ℃. This morphology is a new member in the family of ZnO nano- structures. The structure characterization confirms that the boomerang-like nanorods have a hexagonal wurtzite crystalline structure growing along the [-0001] direction. Photoluminescence measurements of the rods at room temperature exhibit a weak ultraviolet emission band at 380 nm and a relatively broader emis- sion band which can be deconvoluted into two luminescence peaks （centered at 524 and 576 nm, respective- ly） by Gaussian fitting. Raman and X ray photoelectron spectrum （XPS） are also employed for the analy- sis. In the end, the functions of the buffer layer and the growing mechanism of the ZnO nanorods are dis- cussed.

关 键 词：氧化锌 回力标状 纳米棒 光致发光 生长机理 

分 类 号：O484.4[理学—固体物理]