Preparation, phase formation and photoluminescence properties of ZnO–SiO2–B2O3 glasses with different ZnO/B2O3 ratios - Khalkhali, Zahra; Hamnabard, Zohreh; Qazvini, Shamsi Sadat Alavi; Baghshahi, Saeid; Maghsoudipour, Amir (Optical Materials, 2012)