Study of Cadmium-Doped Zinc Oxide Nanocrystals with Composition and Size Dependent Band Gaps  

镉掺杂氧化锌纳米晶禁带宽度的尺寸效应和掺杂效应研究（英文）

作　　者：Hai-xiao Zhang Yue-tao Yang Xiao-jun Liu 张海啸;杨跃涛;刘晓峻(南京大学近代声学教育部重点实验室声学研究所)

机构地区：Key Laboratory of Modern Acoustics, Ministry of Education, Institute of Acoustics, Nanjing University, Nanjing 210093, China

出　　处：《Chinese Journal of Chemical Physics》2018年第2期197-202,246,共7页化学物理学报（英文）

基　　金：supported by the National Basic Research Program of China (No.2012CB921504);the National Natural Science Foundation of China (No.11074127)

摘　　要：Cadrniurn-doped zinc oxide nanocrystals in the quantum confinement region have been firstly synthesized by a fast and facile sonochernical method. The alloyed structure of the nanocrystals is confirmed by X-ray diflraction, transmission electron rnicroscopy, and infrared analysis. With the increase of cadmium to zinc molar ratio from 0 to 2.0, the crystallite sizes of the samples decrease from 5.1 nrn to 2.6 nrn, and the band gaps of the samples show a red shift then a blue shift, and a red shift again. The variations of band gaps of the samples can be interpreted by the crystallite size and the composition. It is found that both the non-therrnal equilibrium environrnent established in the sonochernical reaction and the coordination ability of triethylene glycol solvent play crucial roles in the current preparation.

关 键 词：Alloyed nanocrystal Structure SPECTROSCOPY SONOCHEMISTRY 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TQ132.41[化学工程—无机化工]