| Abstract: | A method to fabricate europium ions doped-high silica glass for transparent fluorescence materials based on the fabrication and sintering technique of nano-porous silica glass was reported. Glasses impregnated with Eu ions and sintered at above 1150 ℃ in a reduction atmosphere show a very strong blue light from an emission band at about 430 nm due to the 4f65d→4f7(8S7/2) transition of the Eu2 ions. On the other hand, the Eu-doped glass obtained by co-impregnated with Y3 and V5 ions and sintering in oxidation atmosphere behaves a very strong red emission band at about 615 nm with a UV excitation. An appearance of vanadate band in the excitation spectrum of Eu3 , Y3 and V5 ions co-doped high silica glass implies an effective energy transferring from VO43- to Eu3 and effective excitation of Eu3 by about 500 nm strong broad emission of VO43-. |
