ZnO纳米棒的光学特性探究  

Study on optical properties of ZnO nanorods

作　　者：丁亚丹 张玉亭[1] 黄金华 洪霞 DING Ya-dan;ZHANG Yu-ting;HUANG Jin-hua;HONG Xia(School of Physics,Northeast Normal University,Changchun 130024,China;National Demonstration Center for Experimental Physics Education (Northeast Normal University), Northeast Normal University, Changchun 130024, China)

机构地区：[1]东北师范大学物理学院,吉林长春130024 [2]东北师范大学物理学国家级实验教学示范中心(东北师范大学),吉林长春130024

出　　处：《物理实验》2022年第6期8-13,共6页Physics Experimentation

基　　金：国家自然科学基金项目(No.51972052);吉林省教育厅科学技术研究项目(No.JJKH20211275KJ)。

摘　　要：为了深入理解一维ZnO纳米材料的优异光学特性,利用油酸锌的高温热分解反应制备了直径约为6.6 nm的ZnO纳米棒,通过X射线衍射仪、电子显微镜以及拉曼光谱仪等对其结构、形貌及光学特性进行了探究.结果表明:该ZnO纳米棒的激子吸收峰相对于体相ZnO材料发生了明显蓝移,体现了该材料的量子限域效应.除了常见的紫外激子发射峰和源自深能级跃迁的可见发射峰之外,还观察到位于394~412 nm的紫光发射峰,该发射峰与激光热效应及ZnO纳米棒表面的有机配体有关.In order to study the unique optical properties of one-dimensional ZnO nanomaterials,ZnO nanorods with a diameter of about 6.6 nm were prepared by the thermal decomposition of Zn-oleate.The structure,morphology and optical properties of the ZnO nanorods were characterized by using X-ray diffractometer,electron microscope,Raman spectrometer and so on.The obvious blue shift of the excitonic absorption peak was found relative to that of the bulk ZnO material,indicating the quantum confinement effect of the ZnO nanorods.Apart from the generally observed ultraviolet excitonic emission peak and the visible emission peak resulting from deep-level transition,an additional violet emission peak within the range of 394~412 nm was also observed.The new emission peak was related to laser thermal effect and the organic ligands on the surface of the ZnO nanorods.

关 键 词：ZNO纳米棒 光致发光 共振拉曼 

分 类 号：O472.3[理学—半导体物理] O433[理学—物理]