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β-Na YF4:Yb3+,Er3+ microrods with average length of 10 μm and diameter of 2.5 μm were synthesized through hydrothermal method. Based on the obtained microrods, transparent and flexible film with upconversion luminescence property was prepared through inorganic-organic composition method by using co-polymerization product of isobornylmethacrylate and urethane acrylate as the polymer substrate. The prepared film shows excellent optical transmission in the visible region with average transmission of 81.3% at high doping concentration(2 wt%) of β-Na YF4:Yb3+,Er3+ microrods. By directing and moving NIR laser beam toward the prepared film with high scanning speed, visible light is effectively emitted and various images are able to display.
β-Na YF4: Yb3 +, Er3 + microrods with average length of 10 μm and diameter of 2.5 μm were synthesized through hydrothermal method. Based on the obtained microlys, transparent and flexible film with upconversion luminescence property was prepared through inorganic-organic composition method by using co-polymerization product of isobornylmethacrylate and urethane acrylate as the polymer substrate. The prepared film shows excellent optical transmission in the visible region with average transmission of 81.3% at high doping concentration (2 wt%) of β-Na YF4: Yb3 +, Er3 + microrods By directing and moving NIR laser beam toward the prepared film with high scanning speed, visible light is effectively emitted and various images are able to display.