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

Taku Goto, Mitsuhiro Honda, Sergei A. Kulinich*, Yoshiki Shimizu, Tsuyohito Ito

*Corresponding author for this work

Research output: Contribution to journalArticle

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.

Original languageEnglish
Article number070305
Number of pages4
JournalJapanese Journal of Applied Physics
Volume54
Issue number7
Early online date16 Jun 2015
DOIs
Publication statusPublished - Jul 2015

Bibliographical note

© IOP

Funding: Japan Society for the Promotion of Science (JSPS) and the Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT).

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