Luminescence Characteristics of Ce3+/Tb3+/Eu3+Tri-doped Gadolinium Borosilicon Glasses for W-LED
B2O3-SiO2-Gd2O3-Al2O3-Na2O of substrate composition,preparation of high temperature sintering way the Ce3+/Tb3+/Eu3+three doped luminescence glass.The optical properties of Ce3+/Tb3+/Eu3+co doped gadolinium borosilicate glass were analyzed through excitation emission spectroscopy,chroma analysis(CIE)etc.According to the spectral analysis,when the concentration of Eu2O3 is 0.9 mol％,the luminous intensity of Eu3+reaches the maximum,the concentration continues to increase,the luminous intensity of Eu3+decreases,and the concentration quenching may occur.The energy transfer phenomena of Ce3+→Tb3+and Tb3+→Eu3+were analyzed by emission spectra and fluorescence lifetime.When the doped concentration ratio of Ce3+/Tb3+/Eu3+is adjusted to 0.6 mol％,0.45 mol％and 0.9 mol％,and excited at 378 nm,the CIE display coordinate point is(0.337 6,0.328 7),approximate white light emission effect.
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