Er3+-Yb3+ and Eu3+-Er3+-Yb3+ codoped Y2O3 phosphors as optical heater

The internal optical heating in the cubic phase Er3+-Yb3+ and Eu3+-Er3+-Yb3+ codoped Y2O3 phosphors synthesized by low temperature, urea assisted combustion technique due to near infrared (NIR) diode laser excitation have been performed by monitoring the upconversion luminescence bands corresponding to the 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2 transitions of Er3+ ions. The results indicate that the developed phosphor materials are of significant interest for making optical heater.