发光
放射化学
材料科学
激发
分析化学(期刊)
铥
荧光粉
化学
兴奋剂
物理
光电子学
色谱法
量子力学
作者
Qu Zeng,H. Liang,Guobin Zhang,Muhammad Danang Birowosuto,Zifeng Tian,Huihong Lin,Yibing Fu,P. Dorenbos,Qiang Su
标识
DOI:10.1088/0953-8984/18/42/002
摘要
Fluoro-apatite M5(PO4)3 F( M= Ca, Sr, Ba) phosphors activated with Ce 3+ ions were prepared by a solid state reaction technique at high temperature. The excitation spectra in the VUV (vacuum ultraviolet)–UV range and the emission spectra in the UV–vis range together with decay time spectra are investigated and discussed. X-ray excited emission spectra were measured and light yields are calculated. The results revealed that Ca(II) sites are preferentially occupied at low doping concentration, and then Ca(I) sites are dominant with the increasing of concentration for Ce 3+ in Ca5(PO4)3F. In contrast, Ce 3+ ions mainly occupied the Sr(II)/Ba(II) sites in Sr5(PO4)3 Fa nd Ba5(PO4)3F even at higher doping concentration. The low light output seems to suggest that the materials are not suitable x-ray or gamma-ray phosphors. (Some figures in this article are in colour only in the electronic version)
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