Defects in ZnO nanoparticles laser-ablated in water–ethanol mixtures at different pressures. (16th June 2015)

• Record Type: Journal Article
• Authors: Goto, Taku; Honda, Mitsuhiro; Kulinich, Sergei A.; Shimizu, Yoshiki; Ito, Tsuyohito
• Is Part Of: Japanese journal of applied physics. Volume 54:Number 7(2015:Jul.)
• Publication Date: 2015-06-16
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/JJAP.54.070305
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: 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.