Synthesis,Structure and Optical Properties of CdO Nanocrystals Directly Grown on Cd Foil  

作　　者：李勇 凌虹 高磊 宋月丽 田明丽 周丰群 

机构地区：[1]Department of Physics and Solar Energy Research Center, Pingdingshan University, Pingdingshan 467000 [2]Department of Mathematics and Information Science, North China IJnive-rsity of Water Resources and Electric Power, Zhengzhou 450045

出　　处：《Chinese Physics Letters》2015年第10期127-129,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos U1262112 and 51176205

摘　　要：Semiconductor nanocrystals directly grown on the conducting metal can lower the contact resistance and can benefit the electron transfer between the semiconductor and the metal. In the present work, CdO nanocrystals are directly synthesized on the conducting Cd foil through a simple solvothermal method. Cd foil is used as the Cd2＋ source and the substrate. The average size of CdO nanocrystals is -23.1 nm by analyzing the XRD data. Moreover the growth mechanism is discussed. A hierarchic structure characterized by the nano rods and nano particles in the top and bottom layers, respectively, can be observed. From the UV-vis absorption analyzed by Taucs relation, the two different optical band gaps are obtained. The photoluminescence spectrum is obtained and studied.Semiconductor nanocrystals directly grown on the conducting metal can lower the contact resistance and can benefit the electron transfer between the semiconductor and the metal. In the present work, CdO nanocrystals are directly synthesized on the conducting Cd foil through a simple solvothermal method. Cd foil is used as the Cd2＋ source and the substrate. The average size of CdO nanocrystals is -23.1 nm by analyzing the XRD data. Moreover the growth mechanism is discussed. A hierarchic structure characterized by the nano rods and nano particles in the top and bottom layers, respectively, can be observed. From the UV-vis absorption analyzed by Taucs relation, the two different optical band gaps are obtained. The photoluminescence spectrum is obtained and studied.

关 键 词：CDO Synthesis Structure and Optical Properties of CdO Nanocrystals Directly Grown on Cd Foil 

分 类 号：TQ132.44[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]