Photoluminescence properties and effect of Bi~(3+) dopant of Eu~(3+) and Dy~(3+) co-doped Sr_3V_2O_8

• 作 者: 马倩 马永青 钱仕兵 吴丹丹 郑赣鸿 吴明在 李广
• 机 构: Anhui Key Laboratory of Information Materials and Devices,School of Physics and Materials Science,An
• 出 处: Journal of Rare Earths
• 发表日期: 2012年05期
• 关键词: reasonably exciting transferring excitation dopant introducing sharp luminous ph

Photoluminescence properties of Sr 2.5 Dy 1/3-x Eu x V 2 O 8(x=0,0.06,0.12,0.18,0.24,0.33) were investigated.The excitation spectra included a broad band in the short wavelength region and several sharp lines in the longer wavelength region,and the spectral origin were discussed.The emission spectra were measured in two different exciting ways,i.e.,exciting the VO 4 group at 270 nm and the Eu 3+ ion at 398 nm,respectively,and the energy transferring process was reasonably suggested.Furthermore,multi-color emission could be achieved in Sr 2.5 Dy 1/3-x Eu x V 2 O 8,indicating that the studied samples had potential applications in the white light emitting diodes.Further investigation showed that reducing the concentration of Eu 3+ and Dy 3+ and introducing Bi 3+ as a sensitizer ion greatly enhanced the emission intensity.

Photoluminescence properties of Sr 2.5 Dy 1/3-x Eu x V 2 O 8 (x = 0,0.06,0.12,0.18,0.24,0.33) were investigated. The excitation spectra included a broad band in the short wavelength region and several sharp lines in the longer wavelength region, and the spectral origin were were. The emission spectra were measured in two different exciting ways, ie, exciting the VO 4 group at 270 nm and the Eu 3+ ion at 398 nm, respectively, and the energy transferring process was reasonably suggested. Still more, multi-color emission could be achieved in Sr 2.5 Dy 1/3-x Eu x V 2 O 8, indicating that the studied samples had potential applications in the white light emitting diodes. Fluorrther investigation showed that that reducing the concentration of Eu 3+ and Dy 3+ and introducing Bi 3+ as a sensitizer ion greatly enhanced the emission intensity.