Shin Sang Su, Kang Deok Hwa, Kim Dae Il, Choi In Gook, Seong Min Hyeok, Yi SoungSoo
Department of Materials Science and Engineering, Silla University, Busan 617-736, Republic of Korea.
J Nanosci Nanotechnol. 2018 Mar 1;18(3):1905-1908. doi: 10.1166/jnn.2018.14946.
Er3+ and Yb3+ co-doped LaVO4 phosphors were synthesized by the facile solid state reaction method. Er3+ ions concentrations were changed from 0.01 to 0.2 mol for the fixed Yb3+ ions concentration at 0.15 mol. The crystalline structures of the phosphors were investigated by X-ray diffraction (XRD). The composition of the phosphors were investigated by X-ray photoelectron spectroscopy (XPS) analysis. The photoluminescence emissions based on the blue emission near 466 nm and green emission near 553 nm were observed and the highest emission intensity occurred for the sample LaVO4:Yb0.15, Er0.20. The green and red up-conversion emissions were observed in Er3+, Yb3+ co-doped LaVO4 phosphors under the excitation of 980 nm laser diode. LaVO3:Yb3+, Er3+ phosphors could be utilized to produce green colored LEDs by excitation for infra-red LED.
采用简便的固相反应法合成了Er3+和Yb3+共掺杂的LaVO4荧光粉。在固定Yb3+离子浓度为0.15 mol的情况下，将Er3+离子浓度从0.01 mol改变至0.2 mol。通过X射线衍射（XRD）研究了荧光粉的晶体结构。通过X射线光电子能谱（XPS）分析研究了荧光粉的组成。观察到基于466 nm附近的蓝光发射和553 nm附近的绿光发射的光致发光，并且样品LaVO4:Yb0.15, Er0.20的发射强度最高。在980 nm激光二极管激发下，在Er3+、Yb3+共掺杂的LaVO4荧光粉中观察到了绿色和红色上转换发射。LaVO3:Yb3+, Er3+荧光粉可用于通过红外LED激发来生产绿色发光二极管。
