Aldo-keto synthesis effect on Eu3＋fluorescence in YBO3 compared with solid state diffusion

• Published in: Journal of rare earths Vol. 33; no. 5; pp. 486 - 490
• Main Authors: Koparkar, K.A., Bajaj, N.S., Omanwar, S.K.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.05.2015
• Subjects: aldo-keto method; europium; optical materials; photoluminescence (PL); rare earths; X射线衍射; yttria; 光致发光光谱; 合成效果; 固态扩散; 扫描电子显微镜; 红色荧光体; 醛酮; 铕离子; aldo-keto method; yttria; photoluminescence (PL); europium; optical materials; rare earths
• ISSN: 1002-0721; 2509-4963
• DOI: 10.1016/S1002-0721(14)60445-2

The red-orange emitting phosphor YBO3：Eu3＋was prepared by aldo-keto method and solid state diffusion. Aldo-keto method implied to decrease the processing time and heating temperature. The red-orange emitting phosphor was characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, as well as emission and excitation photoluminescence spectra re-corded at room temperature. The result of aldo-keto method showed that the phosphor YBO3：Eu3＋could be obtained at 900 °C in less time~60%as compared to solid state diffusion （SSD）. The material showed that the strongest emission peak at 595 nm under excitation at 233 nm was only due to forced magnetic dipole 5D0→7F1 transition of Eu3＋ions. Significantly, the emission inten-sity of YBO3：Eu3＋phosphor prepared by aldo-keto method was relatively higher as compared to that obtained by the solid state diffusion.