Powder　samples　Sr3Y1-x-y(PO4)(3):xTm(3+)-yDy(3+)　were　synthesized　by　the　conventional　solid-state　reaction　method.　By　appropriate　tuning　of　activator　content,　the　emission　color　can　be　adjusted　around　blue　to　white　and　yellow.　It　was　discovered　that　the　energy　transfer　from　Tm3+　to　Dy3+　was　demonstrated　to　be　via　the　intensity　of　Dy3+　emission　increase　with　the　increase　of　Tm3+　concentration.　By　changing　the　doping　concentration　of　Tm3+　and　Dy3+　in　Sr3Y(PO4)(3),　white-emitting　phosphors　are　produced　by　350　nm　excitation　wavelength,　their　corresponding　color　coordinates　are　very　close　to　the　white　color　chromaticity　coordinates　(x=0.33,　y=0.33).　Finally,　Sr3Y1-x-y(PO4)(3):xTm(3+)-yDy(3+)　phosphors　could　be　a　good　promising　single-component　white　light-emitting　UV-convertible　phosphor　in　the　field　of　white　LEDs.　(C)　2013　Elsevier　B.V.　All　rights　reserved.