Effect of Tb³⁺ concentration and sensitization of Ce³⁺ on luminescence properties of terbium doped phosphate scintillating glass

详细信息    查看全文

• 作者：Dongbing He^a ; ^b ; ^{hdb798123@hotmail.com} ; Chunlei Yu^a ; Jimeng Cheng^a ; Shunguang Li^a ; Lili Hu^a
• 关键词：Optical materials and properties ; Scintillating glass ; Luminescence ; Phosphate glass ; Ce³⁺/Tb³⁺-doped
• 刊名：Journal of Alloys and Compounds
• 出版年：2011
• 出版时间：3 February 2011
• 年：2011
• 卷：509
• 期：5
• 页码：1906-1909
• 全文大小：561 K

文摘

Phosphate glasses doped with different concentrations of Ce³⁺ and Tb³⁺ were prepared by high temperature melting method. Effects of Tb³⁺ concentration and sensitization of Ce³⁺ on photoluminescence and radio-luminescence properties of terbium doped phosphate glass have been investigated by absorption, excitation and emission spectroscopy. Results showed the phosphate glass exhibit high broad absorption band attribute to the allowed 4f⁸–4f⁷5d transition of Tb³⁺, which is beneficial for the 542 nm emission of Tb³⁺. It is found that the emission intensity of Tb³⁺ at 542 nm increased as the concentration of Tb³⁺ and Ce³⁺increasing. The suitable concentration of Ce³⁺ and Tb³⁺ in phosphate glass is 2 mol % and 10 mol % respectively, and the emission intensity of Ce³⁺/Tb³⁺-codoped phosphate glass at 542 nm shows 8 times stronger than that of the commercial Bi₄Ge₃O₁₂ (BGO) crystal at 500 nm. The phosphate glass doped with Ce³⁺ and Tb³⁺ ions would be potential candidates for scintillating material for static X-ray imaging.