Preparation Of YAG: Ce By Hydrothermal

YAG:Ce phosphor has the merit of high chemical stability, high hardness, high meltpoint and long life et al. It has good weatherability and will be very stability even if in thecircumstance of humid and ultraviolet without coated. The phosphor and blue LED chipcan make up of optic white light, namely white LED. This white LED has wide applicationfuture and will become the forth new illuminant. This article used hydrothermal methodsynthesized anaphase phosphor material YAG:Ce. Compared with conventional methodsuch as solid-state reactions and combustion, the sample have littler granularity (diameter is200nm) ,purer phase, and have no conglobation. Compared with different reactioncondition, we conclude that if mingle some organic matter then can notability reducereaction requirement. By the study of influence of different reaction circumstance toproduction such as synthesizing temperature, mingle density of Ce3+,we find the bestreaction condition.The sample is cubic structure and has uniform size. The excitation spectra of sample isfrom 420nm to 540nm and emission spectra is from 450nm to 650nm, so the emission lightof sample and blue light of LED ship can well mingle optic Wight light.