Effect of Yb3+/Nd3+Doped on Luminescent Properties of Sr9 Ga(PO4)7∶Cr3+
Near-infrared phosphors have garnered significant research attention due to their unique physical properties and broad application prospects.In this work,we synthesize the Sr9Ga(PO4)7∶0.8Cr3+near-infrared phosphors through high-temperature solid phase reaction.The Sr9Ga(PO4)7∶0.8Cr3+emitted light at a wavelength of 833 nm with a full width at half maximum of 117 nm excited by blue light at 460 nm.Rare-earth ions were also incorporated into the Sr9Ga(PO4)7∶0.8Cr3+,Yb3+and Sr9Ga(PO4)7∶0.8Cr3+,Nd3+.The Sr9Ga(PO4)7∶0.8Cr3+was compared with Sr9Ga(PO4)7∶0.8Cr3+,Yb3+which emits characteristic peaks of Cr3+and Yb3+when excited by 460 nm blue light.Spectroscopic analysis and decay curves changes confirm the existence of a Cr3+-Yb3+energy transfer channel with a maximum energy transfer efficiency of 80.2%.The thermal stability of Sr9Ga(PO4)7∶0.8Cr3+,Yb3+has improved the overall fluorescence spectrum by about 3.7 times due to the excellent thermal stability of Yb3+.Sr9Ga(PO4)7∶0.8Cr3+,Nd3+samples were designed and synthesized to show the multi-peak emission at 833,876,1 060 nm.Finally,we discuss the potential applications of these phosphors in temperature sensing and non-destructive testing,demonstrating their exciting application prospects.
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