应用化学 ›› 1996, Vol. 0 ›› Issue (3): 72-74.

• 研究简报 • 上一篇    下一篇

磷酸镧铈铽荧光体微波热效应法合成和发光性能

李沅英, 王旻, 蔡少华   

  1. 中山大学化学系 广州 510275
  • 收稿日期:1995-08-21 修回日期:1996-02-15 出版日期:1996-06-10 发布日期:1996-06-10
  • 基金资助:
    广东省自然科学基金

Synthesis of Cerium-and Terbium-Activated Lanthanum Phosphate by Means of Microwave Heating and Its Luminescence Properties

Li Yuanying, Wang Ming, Cai Shaohua   

  1. Department of Chemistry, Zhongshan University, Guangzhou 510275
  • Received:1995-08-21 Revised:1996-02-15 Published:1996-06-10 Online:1996-06-10

摘要: 80年代初,曾有许多磷酸镧铈铽荧光体的报道,长期以来,该荧光体都用高温固相反应法制备,灼烧温度1100℃以上,需3~5 h,合成产物必须经球磨粉碎.

关键词: 微波热效应, 合成, 荧光体, 掺铈铽, 磷酸镧

Abstract: The synthesis of(La,Ce,Tb)PO4 by means of microwave heating is reported. The analysis of X-ray powder diffraction data shows that the phosphor belongs to the mono-clinic system with the structure of monazite.The phosphor has the maximum excitation peak at λex=273.5 nm and maximum emission peak at λem=543 nm,the latter being the characteristic emission of Tb3+ion.The effects of different flux and (NH4)2HPO4 dosage on the luminescence intensity are examined and the chromatic coordinates and related chromatic temperature are measured.

Key words: microwave heating effect, synthesis, phosphor, cerium and terbium activated lan thanum phosphate