ZnO微纳米盘的制备与光激射  

Fabrication and Lasing of ZnO Micro-nano Disks

作　　者：陈三[1] 方亮[1] 石超[1] 路洪艳[1] 朱光平[1] 

机构地区：[1]淮北师范大学物理与电子信息学院,安徽淮北235000

出　　处：《吉林师范大学学报（自然科学版）》2015年第1期32-36,共5页Journal of Jilin Normal University:Natural Science Edition

基　　金：国家自然科学基金项目(60806015;11104160);安徽省教学研究项目(2012jyxm261);安徽省高等学校省级质量工程项目(2011248);淮北师范大学教学研究项目(jy12111)

摘　　要：本文采用简单的方法制备出ZnO微纳米盘.利用在空气气氛下,锌原子扩散距离短,有利于形成高的蒸气压,通过控制Zn源的质量和蒸发温度,在自催化生长机制下,获得了直径为微米量级和厚度从几百纳米到几微米的ZnO盘.XRD谱和扫描电子显微镜(SEM)照片表明样品为六方晶系纤锌矿ZnO微纳米盘,盘的排列具有高度的取向性,即择优生长方向为<100>晶向.样品在500 nm处有较强的缺陷发光峰和380 nm处较弱的激子发光峰.在355 nm脉冲激光泵浦下,实现了ZnO微盘的受激辐射行为.In this paper,a simple method for fabricating ZnO micro-nano disks was adopted,in which ZnO micronano disks with diameter from several to dozens of microns and thickness from several hundreds of nanometers to several microns were obtained on Si（ 100） substrates. In the atmosphere,the short diffusion length of atoms of Zn vapor locally formed higher supersaturation ratio which tended to grow ZnO grains. X-ray diffraction（ XRD） and scanning electron microscopy（ SEM） images revealed the grown samples were hexagonal Zn O disks and the c axes of disks were basically perpendicular to the surface of the substrate,which indicated the preferred growth directions were 100 crystal orientations. There was a stronger emission peak centered at 500 nm and a weaker one at 380 nm,which were related to oxygen vacancy defect and exciton emission,respectively. Lasing of ZnO disks was realized under the pumping of 355 nm pulse laser.

关 键 词：ZNO 微纳米盘 受激辐射 

分 类 号：O78[理学—晶体学]