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无机材料学报

无机材料学报

• 研究论文 • 上一篇    下一篇

掺杂三价铽离子的邻苯二甲酸锌发光材料

王清叶; 王东利; 任敏; 孙聚堂   

  1. 武汉大学化学系; 武汉 430072
  • 收稿日期:1997-03-31 修回日期:1997-05-08 出版日期:1998-04-20 网络出版日期:1998-04-20

Tb3+-Doped Zinc Phthalate Phosphor

WANG Qing-Ye; WANG Dong-Li; REN Min; SUN Ju--Tang   

  1. Department of Chemistry; Wuhan University Wuhan 430072 China
  • Received:1997-03-31 Revised:1997-05-08 Published:1998-04-20 Online:1998-04-20

PDF (PC)

772

被引次数

23

摘要： 采用固相反应法合成了掺杂三价铽离子的邻苯二甲酸锌发光材料，测定了其晶体结构、发射光谱和激发光谱．研究了发光强度和发射带及激发带的半宽度与铽离子浓度的关系．提出了从邻苯二甲酸根π，π和n,π*态到Tb3+离子5D4能级的能量传递过程有两个途径：（1）由S1π，π*态直接传递到Tb3+离子5Hi能级，然后经过无辐射跃迁弛豫到5D3能级，再转移给乃T1π,π*态，最后传递到5D4能级；（2）由S1π，π*和Sin，π*态经系间跨越衰减到T1π,π*和T1n，π*态，然后再传递到Tb3+离子的5D4能级．

关键词: 邻苯二甲酸, 锌盐, 铽, 发光材料

Abstract: The Tb3+-doped zinc phthalate (ZnPht:Tb) phosphor was prepared by the solid phase reaction of zinc oxide and phthalic anhydride in the saturated water vapor
at 80～100℃. The crystal structure, emission and excitation spectra were determined. The dependence of the fluorescent spectrum properties on the Tb3+
ion concentration was investigated. The energy transfer mechanism from π,π* and n,π* excited states of Pht2- radical to 5D4 energy level of Tb3+
ion was revealed: (1) S1(π,π*, n,π*)→(5Hj,5Lj)→5D3→ T1(π,π*, n,π*)→5H4; (2) S1(π,π*, n,π*)→ T1(π,π*, n,π*)→5H4.

Key words: phthalic acid, zinc salt, terbium, phosphor

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