A wide range color-tunable tri-chromatic Ca9Sc(PO4)7:Eu2+,Tb3+,Mn2+ w-LED phosphor was obtained based on the efficient Eu2+ to Tb3+ and Eu2+ to Mn2+ energy transfer processes.
Host-sensitized rare-earth-ion lighting has emerged as a promising route to realize single-phase white-light emission due to effectively overcoming the self-absorption problems within multiple phosphors. However, the involved energy transfer mechanism...