A single-phase full-color phosphor Sr₂Ca₂La(PO₄)₃O:Eu^{2+,Tb3+,Mn2+: Photoluminescence and energy transfer}

A single-phase full-color emitting phosphor Sr2Ca2La(PO4)(3)O:Eu2+,Tb3+,Mn2+ was synthesized by the high temperature solid-state method. The phase formation, luminescence properties, thermal stability, and energy transfer from Eu2+ to Tb3+ and Eu2+ to Mn2+ in Sr2Ca2La(PO4)(3)O were investigated in details. Tunable emission color from blue to blueish green or orange can be observed under 365 nm near-ultraviolet excitation based on the energy transfer from Eu2+ to Tb3+ or Mn2+ ions by varying the ratio of Eu2+/Tb(3+ )or Eu2+/Mn2+ ions. White light was obtained with chromaticity coordinates of (0.3558, 0.3500) in the Sr2Ca2La(PO4)(3)O:0.04Eu(2+),0.08Tb(3+),0.40Mn(2+) phosphor, suggesting their potential applications in white light emitting diodes.(c) 2021 Chinese Society of Rare Earths. Published by Elsevier B.V. All rights reserved.