[13p-C301-1~12] 4.8 Strong Light Excitation Phenomena Applied to Materials and Bio Engneering

▼ [13p-C301-5] Fabrication of of YVO₄:Eu³⁺Nanoparticles by Laser ablation in Liquid

〇(DC)HAOHAO WANG¹、Osamu Odawara¹、Hiroyuki Wada¹ (1.Tokyo Tech.)

キーワード：Rare-earth, Oxide material

During the past decade, dramatic efforts have been dedicated to exploring rare-earth doped nanoparticles, whose optical properties and low cytotoxicity are promising for biological application. Yttrium orthovanadate (YVO₄), which crystallizes in a zircon-type structure, has received considerable interest due to its suitable lattice structure for doping with rare earth elements. YVO₄:Eu³⁺ is an important red emitting phosphor while it was used widely in color television, high-pressure mercury lamp. In particular, YVO₄:Eu³⁺ nanocrystal is promising material for biological applications.
In this study, YVO₄:Eu³⁺ colloidal nanoparticles are prepared by laser ablation in DI water and surfactant solution such as sodium dodecyl sulfate (SDS) and cetrimonium bromide (CTAB). Interestingly, we found that the nanoparticles with different size and morphology were obtained at different surfactant solution.