Synthesis of SrGa2S4:Mn,Ce and SrGa2S4:Mn,La phosphors by sulfurization of oxide precursors prepared by an amorphous metal complex method and a micro-gel freezing drying process

Makoto Kobayashi , Koji Tomita , Valery Petrykin, Shu Yin , Tsugio Sato , Masahiro Yoshimura , Masato Kakihana