Surface characteristics of Y3Al5O12:Ce3+ phosphor with greatly enhanced photoluminescence after chemical defect-selective etching

SEM images of the shape of the YAG phosphor particles before and after surface modification: the YAG phosphor particles without (a) and with (d) surface modification; the edge angle of one of particles without (b) and with (e) surface modification; the surface of one of particles without (c) and with (f) surface modification