Visible luminescence properties of Er3+–Pr3+ codoped fluorotellurite glasses

• A novel fluorotellurite glass was prepared by conventional quenching melt technique in atmosphere.
• We observed energy transfer between the energy level of Er3+: 4F7/2 and Pr3+: 3P0 in this glass.
• Luminescence colors of these samples locate at green zone.
• Luminescence colors gradually move to white light area with Pr3+ concentration increasing.

Er3+ and Pr3+ codoped fluorotellurite glasses has been synthesized. The PL spectrum revealed that the intensity of Er3+ characteristic emission was enhanced as Pr3+ concentration increased. Due to small mismatch between the energy level of Er3+: 4F7/2 and Pr3+: 3P0 resonant energy was possibly transferred between them. While Pr3+ concentration kept increasing, both Pr3+ and Er3+ concentration quenching occurred. These glasses with the controllable CIE coordinates might be a potential candidate for the widely application such as solid state multicolor display.