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A series of novel Sr 3 WO 6 : x Dy 3+  (0.01 ≤  x  ≤ 0.35) yellow emitting phosphors are synthesized using the conventional high-temperature solid-state method. The phase analysis and optical properties are discussed in detail. Through the X-ray diffraction (XRD) analysis, the obtained phosphors are identified to be pure phases. The Sr 3 WO 6 :Dy 3+  phosphors emit bright yellow emission light at 578 nm under 352 nm excitation, which is ascribed to the  4 F 9/2 - 6 H 13/2  transitions. The optimum doping concentration is 0.02 mol. The activation energy Ea is calculated to be 0.154 eV. The Commission International de L'Eclairage (CIE) coordinates and correlated color temperature (CCT) of the Sr 3 WO 6 : x Dy 3+  (0.01 ≤  x  ≤ 0.35) is located in the yellow region. All results indicate that the Sr 3 WO 6 :Dy 3+  phosphors have the potential to be applied in the white light-emitting diode (w-LED) field.

Optical properties of Sr 3 WO 6 :Dy 3+ phosphors applying for white LEDs