New Eu-doped phosphor prepared by sol-gel process

摘要

Eu-doped silica gel modified with K~+ and Sr~(2+) ions was obtained by sol-gel process. The complex gel annealed at 873 K was characterized with TEM, XRD, PL, etc. Results showed that the gel desolventized around 393 K and polymerized to create complex silicate around 833 K while heating. It presented steadily intense luminescence because of part of doped europium reduction spontaneously. We found that the modified on silica gel doped with europium lowered the luminescent transfer temperature about 500 K.