Preparation and luminescent properties of Y2Zr2O7:Eu3+ phosphor for W-LED application

Ultraviolet-C light has significant application prospects in the fields of disinfection, air purification, etc. Herein, an effective UVC upconversion phosphor Y 2 SiO 5 :Pr 3+ was successfully prepared, as evidenced by the XRD results. The diffuse reflection spectra of Y 2 SiO 5 : Pr 3+ phosphors presented two distinct absorption bands corresponding to the electron transitions of 3 H 4 → 3 P 2 and 3 H 4 → 1 D 2 , and the E g was determined to be 4.22 eV for the Y 2 SiO 5 host, which is very close to the E g (4.172 eV) calculated by DFT. Under the excitation of 460 nm laser, two emission peaks centered at ~247 nm and ~ 258 nm were found in the range of 230-280 nm, which are attributed to the transitions of 4 f 5 d → 3 H 4 and 4 f 5 d → 3 H 5 of Pr 3+ ions. With the help of temperature-dependent emission spectra, the phosphor demonstrated impressive thermal stability up to 150 °C. These findings indicate that the Y 2 SiO 5 : Pr 3+ phosphor has the potential application in disinfection.

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Preparation and luminescent properties of Y2Zr2O7:Eu3+ phosphor for W-LED application

Cited by 10 publications

References 29 publications

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Study on the influence of Bi3+ and Sm3+ doping on the luminescence properties of Ba2SiO4: Eu3+ red phosphor

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Structure and Upconversion Luminescence Properties of Pr3+-Doped Y2SiO5 Phosphor

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