Preparation and Characterization Upconversion Luminescence Material of Yttrium Aluminate Doped with Rare Earth

Low phonon energy yttrium aluminate was adopted as matrix and the upconversion materials yttrium aluminate co-doped with Yb3+ and Er3+ was synthesized by solid-state reaction method. The X-ray diffraction spectra and the upconversion emission spectra of various samples were measured and the effect of Er3+ concentration, sensitization, fluxing agent and calcining temperature on the luminescence properties was studied. Research results showed that the sample could emit green light at 543 and 570 nm when excited 980 nm laser; the optimum concentration of Er3+ should be 1.0%; sensitization of Yb3+ could enhance luminescent effects of Er3+ obviously; the optimum content of F3BO3 fluxing agent should be 8% and the optimum calcining temperature should be 1500 °C.