Novel Solution Synthesis of White LED Phosphors by Microreaction Method

A rare earth ion activated phosphor material has been successfully synthesized for the first time using a newly developed microreaction system. Control of the particle size of Y3Al5O12:Ce3+ (YAG:Ce) yellow phosphor powder has been attempted by changing the reaction space. The size can be varied between 400-1000 nm by maintaining almost the same photoluminescent performance. An internal quantum efficiency of 85% has been achieved for the YAG:Ce powder sample having an average particle size of 400 nm.