Pr3+–Yb3+ codoped Y2O3 phosphor for display devices

Efficient green colour emitting Pr3+–Yb3+ codoped Y2O3 phosphor prepared by low temperature solution combustion process has been investigated under the excitation with a 980 nm diode laser. Several upconversion emission bands from Pr3+ ions with their enhanced upconversion emission intensity have been observed on codoping of Yb3+ ions in the Y2O3:Pr3+ system. To identify the phase formation, size of crystallites and strain present in synthesized sample, X-ray diffraction pattern has been recorded. The decay curve analysis for the emitting level has also been performed along with power dependence study to clear the upconversion process. The tunability of colour emitted from the codoped phosphor has been examined which proves its suitability for display devices.