Zn 2 SiO 4 :Mn phosphor particles were prepared by a flame spray pyrolysis method. It has been generally known that the high-temperature flame enables fast drying and decomposition of droplets. In the present investigation, the morphology and luminescent property of Zn 2 SiO 4 :Mn phosphor were controlled in a severe flame preparation condition. The particle formation in the flame spray pyrolysis process was achieved by the droplet-to-particle conversion without any evaporation of precursors, which made it possible to obtain spherical Zn 2 SiO 4 :Mn particles of a pure phase from a droplet. Using colloidal solutions wherein dispersed nano-sized silica particles were adopted as a silicon precursor. Zn 2 SiO 4 :Mn particles with spherical shape and filled morphology were prepared and the spherical morphology was maintained even after the high-temperature heat treatment, which is necessary to increase the photoluminescence intensity. The Zn 2 SiO 4 :Mn particles with spherical shape, which were prepared by the flame spray pyrolysis and posttreated at 1150 ? C , showed good luminescent characteristics under vacuum ultraviolet (VUV) excitation.