Journal of the American Ceramic Society, Vol.95, No.1, 275-279, 2012
Luminescence Properties of Tb-Eu Co-Doped Aluminosilicate and Zinc Silicate Glasses
In this article, we report the luminescent properties and energy transfer behavior of Tb and Eu in aluminosilicate and zinc silicate glasses. Both glass systems exhibit a combination of blue, green, and red emissions. The optical absorption spectra provide an evidence of the reduction reaction of Eu3+ ions in aluminosilicate glasses and it proves that the aluminosilicate glasses may be more promising for producing white light due to the existing blue light emission of Eu2+ ions. The emission and lifetime measurements reveal the energy transfer is from Tb3+ (5D4) to Eu3+ (5D1) by the quadrupolequadrupole interaction between these two ions. The calculated energy transfer efficiency is up to 32.1% in zinc silicate glasses.