Red-green-blue-tunable emission from Eu3+ and Tb3+ codoped pyrophosphate phosphors
2019
Abstract Color-tunable phosphors based on a single host are superior to traditional mixed primary-color phosphors in fluorescent lamps, due to the better consistency of different color components in service. In this work, a series of Eu3+/Tb3+ doped MgIn2P4O14 phosphors were synthesized by a conventional solid state reaction method. The phosphors exhibit strong absorption around 254 nm with negligible absorption in the visible light region. Under the joint action of the co-activation, cross-relaxation, sensitization, and phonon-assistance, color-tunable reddish-orange-yellow-green-blue emission is achieved in MgIn2P4O14: Eu, Tb phosphors by adjusting the doping content, which demonstrates great potential for the application in fluorescent lamps.
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