A spectroscopic investigation of sodium germanate glasses activated with Ce3+, Tb3+ and Ce3+/Tb3+ is carried out by analyzing their photoluminescence spectra and decay times. Non-radiative energy transfer from Ce3+ to Tb3+ is observed upon near-UV excitation at 310 nm (peak emission wavelength o...detailed
A spectroscopic analysis of sodium germanate glasses activated with Eu3+, Tb3+ and Eu3+/Tb3+ is performed from their photoluminescence spectra and decay times. In the Eu3+-singly doped glass reddish-orange light emission, with x=0.64 and y=0.35 CIE1931 chromaticity coordinates, is obtained upon ...detailed