应用化学 ›› 1993, Vol. 0 ›› Issue (2): 70-72.

• 研究简报 • 上一篇    下一篇

LaP3O9:Ce,Tb磷光体的合成与光谱特性

高信, 洪广言, 刘书珍, 李有谟   

  1. 中国科学院长春应用化学研究所 130022 长春
  • 收稿日期:1992-03-20 修回日期:1992-11-10 出版日期:1993-04-10 发布日期:1993-04-10
  • 基金资助:
    国家自然科学基金;中国科学院长春物理研究所激发态物理开放实验室基金

PREPARATION AND SPECTROSCOPIC PROPERTIES OF LaP3O9:Ce,Tb PHOSPHORS

Gao Xin, Hong Guangyan, Liu Shuzhen, Li Youmo   

  1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun
  • Received:1992-03-20 Revised:1992-11-10 Published:1993-04-10 Online:1993-04-10

摘要: Ce3+离子有宽而强的4f-5d吸收带,能有效地吸收能量,并形成强的宽带发射。Ce3+的5d-4f跃迁是允许的电偶极子跃迁,其5d态的寿命非常短。为此Ce3+可将能量有效地传递给其它离子,而成为良好的敏化剂。通常Ce3+对Tb3+的敏化十分有效,已有许多Ce3+敏化Tb3+的绿色发光材料。

关键词: 磷酸镧, Ce3+, Tb3+, 能量传递, 磷光体, 合成

Abstract: Pure phase LaP3O9:Ce, Tb phosphors have been prepared by precipitation from solution followed by subsequent igniting. They are of cyclic structure and belong to the orthorhombic crystal system with space group C2221. The spectra of LaP3O9:Ce, LaP3O9:Tb and LaP3O9:Ce,Tb have been measured. It was observed that Ce3+ can effectively transfer its energy to Tb3+, greatly enhancing the emission of Tb3+. From the results obtained it can be argued that LaP3O9:Ce,Tb might be a new green-emitting phosphor of high efficientcy.

Key words: lanthanum phosphate, cerium ion, terbium ion, energy transfer, phosphor, preparation