Photoluminescence of ZnO nanoparticles generated by laser ablation in deionized water

被引：0
|
作者：
Davoud Dorranian
Elmira Solati
Laya Dejam
机构：
[1] Islamic Azad University,Laser Laboratory, Plasma Physics Research Center, Science and Research Branch
[2] Islamic Azad University,Physics Department, Karaj Branch
来源：
Applied Physics A | 2012年 / 109卷
关键词：
Dynamic Light Scattering; Laser Pulse Energy; Pulse Laser Ablation; Visible Emission; High Pulse Energy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Zinc oxide (ZnO) nanoparticles were synthesized using pulsed laser ablation of a Zn metal plate in deionized water without using surfactant. The beam of a Q-switched Nd:YAG laser of 1064-nm and 532-nm wavelengths at 6-ns pulse width and different fluences is employed to irradiate the solid target in water. Transmission electron microscopy images revealed that the size of the ZnO nanoparticles formed by the 532-nm wavelength laser beam is smaller than that of the nanoparticles generated by the 1064-nm wavelength laser beam. The room-temperature photoluminescence spectra of the ZnO nanoparticles show intense violet emission along with emission in blue and green bands. The excellent ultraviolet emission indicates that the ZnO nanostructures have a low defect concentration.
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页码：307 / 314
页数：7
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