Synthesis and luminescent properties of lanthanide-doped ScVO₄ microcrystals

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• 作者：Shuilin XU (徐水林)^a ; Xiaoji XIE (谢小吉)^a ; Baozhou ZHAO (赵宝洲)^a ; Li NIE (聂 溧)^a ; Yue PAN (潘 岳)^b ; Haiquan SU (苏海全)^b ; Ling HUANG (黄 岭)^a ; ^{iamlhuang@njtech.edu.cn} ; Wei HUANG (黄 维)^a ; ^{iamwhuang@njtech.edu.cn}
• 关键词：ScVO4 ; hydrothermal synthesis ; down/upconversion luminescence ; rare earths
• 刊名：Journal of Rare Earths
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：35
• 期：1
• 页码：28-33
• 全文大小：3340 K
• 卷排序：35

文摘

High quality and monodispersed ScVO4 microcrystals were successfully synthesized via a mild hydrothermal route using NH4VO3 as vanadium source. The X-ray power diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM) results indicated that the size, shape, and phase formation of the ScVO4 microcrystals could be tuned by altering the reaction temperature, reaction time, and pH value of the initial solution. Furthermore, the down- and upconversion luminescence of ScVO4:Ln (Ln=Eu, Dy, Sm, Yb/Ho, Yb/Er, and Yb/Tm) microcrystals were characterized and the respective energy transfer processes were also discussed. The experimental results demonstrated that reactions at 200 °C, 24 h, and pH=6 could generate perfect ScVO4 microcrystals, which were then used for luminescence studies.