Cold and warm white light generation using Zn(PO3)2 glasses activated by Ce3+, Dy3+ and Mn2+

► Non-radiative energy transfer from Ce3+ to Dy3+ and Mn2+ takes place in Zn(PO3)2 glasses doped with Ce3+/Dy3+/Mn2+. ► Zn(PO3)2 glasses doped with Ce3+/Dy3+ can generate 5250 K cold white light emission. ► Zn(PO3)2 glasses doped with Ce3+/Dy3+/Mn2+ can generate 2700 K warm yellowish orange light emission.