Up-conversion luminescence performance of Yb3+, Er3+/Ho3+ co-doped Y2W3O12 phosphors

In this paper, Yb3+-Er3+ and Yb3+-Ho3+ co-doped Y2W3O12 phosphors were prepared by high temperature solid state method. The crystal structure, fluorescence properties and fluorescence decay time of phosphors were characterized by X-ray diffraction, Energy dispersive spectroscopy, Fourier transform infrared spectroscopy and Photoluminescence spectra. The results show that Yb3+, Ho3+ and Er3+ ions enter the Y2W3O12 lattice successfully with + 3 valence state and replace the Y3+ ions in the lattice. Under 980 nm laser excitation, 20%Yb3+-1%Er3+ and 8%Yb3+-1%Ho3+ are the best combination of ion doping concentration. The emission spectra of Yb3+-Er3+: Y2W3O12 phosphor showed strong green emission and weak red emission, and the emission spectra of Yb3+-Ho3+: Y2W3O12 phosphor showed typical green emission and red emission, and there was an obvious energy transfer process of Yb3+ -> Er3+ and Yb3+ -> Ho3+. These studies show that Yb3+-Er3+/Ho3+: Y2W3O12 materials can be efficiently applied in up-conversion luminescence field, and have good prospects for application in laser, anti-counterfeiting, lighting and other technologies.

Automated summary

Yb3+-Er3+ and Yb3+-Ho3+ co-doped Y2W3O12 phosphors were prepared and characterized. The best combination of ion doping concentration was found to be 20%Yb3+-1%Er3+ and 8%Yb3+-1%Ho3+. The emission spectra showed strong green and weak red emission for Yb3+-Er3+: Y2W3O12, and typical green and red emission for Yb3+-Ho3+: Y2W3O12, indicating an energy transfer process. These materials hold great potential for applications in up-conversion luminescence, laser, anti-counterfeiting, lighting, and other technologies.