Hydrothermal synthesis and luminescent properties of LnPO(4): Tb (Ln = La, Gd) phosphors under VUV excitation

作者：Wu Chunfang; Wang Yuhua; Jie Wei

来源：Journal of Alloys and Compounds, 2007, 436(1-2): 383-386.

DOI：10.1016/j.jallcom.2006.07.056

• VUV
• luminescence
• hydrothermal synthesis
• phosphate

Tb doped LnPO(4) (Ln = La, Gd) phosphors with monoclinic system were successfully prepared by mild hydrothermal reaction at 240 degrees C. The 543 nm emission of Tb+3 in GdPO4 is higher than in LaPO4. By comparison, it is found that the intensity of host absorption band of GdPO4:Tb is higher than that of LaPO4:Tb which is ascribed to the energy transfer efficiency between the PO43- molecule and Tb3+ is higher. The en-fission intensity of optimal composition of GdPO4:0.3Tb is comparable with that of commercial Zn2SiO4:0.04Mn phosphor. These results suggest that GdPO4:0.3Tb is a potential candidate for plasma display panels (PDPs) application.

• 出版日期2007-6-14
• 单位兰州大学