Photoluminescent properties of Ca_2RE_8(SiO_4)_6O_2:A (RE=Y, Gd; A=Pb~(2+), Mn~(2+)) phosphor films

• 作 者: 韩秀梅 林君 李哲 齐西伟 李明亚 王晓强
• 机 构: Department of Materials Science and Engineering Northeastern University at Qinhuangdao Branch,Key L
• 出 处: Journal of Rare Earths
• 发表日期: 2008年03期
• 关键词: phosphor exponential fitted lifetime luminescence coated excitation Gd Mn RE=Y

Ca2RE8(SiO4)6O2:A (RE=Y, Gd; A=Pb2+, Mn2+) phosphor films were dip-coated on quartz glass substrates through the sol-gel process. X-ray diffraction (XRD), photoluminescence (PL) spectra as well as lifetimes were used to characterize the resulting films. Under short wavelength UV excitation, the film showed a red emission with medium intensity. The decay curve of Mn2+ luminescence in Ca2Gd8(SiO4)6O2:Pb Mn film could be fitted into a single exponential function. The lifetime of Mn2+ was 10.21 ms in Ca2Gd8(SiO4)6O2.

(RE = Y, Gd; A = Pb2 +, Mn2 +) phosphor films were dip-coated on quartz glass substrates by the sol-gel process. X-ray diffraction (PLD) spectra of photoluminescence as well as lifetimes were used to characterize the resulting films. Under short wavelength UV excitation, the film showed a red emission with medium intensity. The decay curve of Mn2 + luminescence in Ca2Gd8 (SiO4) 6O2: Pb Mn film could be fitted into a single exponential function. The lifetime of Mn2 + was 10.21 ms in Ca2Gd8 (SiO4) 6O2.