Blue-purple　emitting　Sr2-xSiO4:xCe3+　(x=0.01-0.09,　in　steps　of　0.01)　and　Sr1.95-ySiO4:0.05Ce3+,　yLi+　(y=0.01-0.07,　in　steps　of　0.02)　phosphors　have　been　prepared　by　co-precipitation　method　with　MCM-41　as　silica　source.　The　emission　spectra　of　Sr2-xSiO4:xCe3+　show　an　asymmetric　broad　band　with　a　maximum　around　410　nm　and　the　critical　mole　fraction　is　found　to　be　5%.　Ce3+　ions　prefer　nine-coordinated　Sr(II)　sites　over　ten-coordinated　Sr(I)　sites.　The　emission　intensity　of　Sr1.95SiO4:0.05Ce3+　can　be　improved　effectively　by　co-doping　Li+　ions　as　charge　compensator　and　a　greater　degree　of　the　improvement　is　observed　for　phosphor　calcined　at　1　100℃　compared　with　1　000℃.　The　most　suitable　doping　amount　of　Li+　for　Sr1.95-ySiO4:0.05Ce3+,　yLi+　is　y=0.05.　©　2016,　Science　Press.　All　right　reserved.