Defects in ZnO nanoparticles laser-ablated in water-ethanol mixtures at different pressures

被引：23
|
作者：
Goto, Taku [1 ]
Honda, Mitsuhiro [2 ]
Kulinich, Sergei A. [2 ,3 ]
Shimizu, Yoshiki [4 ]
Ito, Tsuyohito [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn, Ctr Atom & Mol Technol, Suita, Osaka 5650871, Japan
[2] Tokai Univ, Inst Innovat Sci & Technol, Hiratsuka, Kanagawa 2591292, Japan
[3] Aston Univ, Aston Inst Photon Technol, Birmingham B4 7ET, W Midlands, England
[4] Natl Inst Adv Ind Sci & Technol, Nanomat Res Inst, Tsukuba, Ibaraki 3058565, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2015年 / 54卷 / 07期
基金：
日本学术振兴会;
关键词：
AQUEOUS-SOLUTION; LIQUID; PHOTOLUMINESCENCE; EMISSION;
D O I：
10.7567/JJAP.54.070305
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The effect of liquid medium and its pressure on the photoluminescence of ZnO nanoparticles prepared via laser ablation of Zn targets in various water-ethanol mixtures is studied. As the ethanol content increases, the photoluminescence of the product changes, while metallic zinc is observed to emerge in nanomaterials prepared in ethanol-rich environments. The applied pressure had a less profound effect, mainly affecting materials produced in water or water-ethanol, and much less those generated in pressurized ethanol. Tuning the reactivity of the liquid and pressurizing it during laser ablation is demonstrated to be promising for tailoring the emission properties of the product. (C) 2015 The Japan Society of Applied Physics
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页数：4
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