Morphology and optical properties of YVO4:Eu3+ nanoparticles fabricated by laser ablation in ethanol

被引：22

作者：

Wang, Haohao ^{[1
]}

Odawara, Osamu ^{[2
]}

Wada, Hiroyuki ^{[2
]}

机构：

[1] Tokyo Inst Technol, Interdisciplinary Grad Sch Sci & Engn, Dept Innovat & Engn Mat, Midori Ku, 4259 Nagatsuta Cho, Yokohama, Kanagawa 2268502, Japan

[2] Tokyo Inst Technol, Sch Mat & Chem Technol, Midori Ku, 4259 Nagatsuta Cho, Yokohama, Kanagawa 2268502, Japan

来源：

APPLIED SURFACE SCIENCE | 2017年 / 425卷

关键词：

Laser ablation; Water-ethanol mixture; Oxide nanoparticles; Rare-earth metal; LIQUID; PHASE;

D O I：

10.1016/j.apsusc.2017.07.072

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

YVO4: Eu3+ nanoparticles were fabricated by pulsed laser ablation in water-ethanol mixtures with ethanol volume fractions of 0%, 10%, 30%, 50%, and 100%. Scanning electron microscopy and transmission electron microscopy were performed to characterize the nanoparticle morphologies and crystallinities. Photoluminescence and UV-vis absorption were used to investigate the optical properties. The results showed that only ovoid-like nanoparticles were obtained when using deionized water as the liquid medium. Sphere-shaped and ovoid-shaped nanoparticles simultaneously appeared after adding ethanol to the liquid; and finally, only spherical nanoparticles were obtained in pure ethanol. The crystallinities and PL intensities of the nanoparticles varied inversely to the corresponding liquid viscosity. When increasing the ethanol content, the UV-vis showed a blue shift that could be ascribed to the decreased covalence of V O bonds. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：689 / 695

页数：7

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