Three Color Upconversion Luminescence of Er3+/Yb3+/Tm3+ Doped Tellurite Glass for Display Applications

Abstract

Red, green and blue (RGB) emissions related to frequency upconversion and energy transfer process in Er3+/Tm3+/Yb3+ doped tellurite glass under 980 nm excitation are reported. The intense blue (480 nm), green (525 and 550 nm) and red (650 nm) emissions are simultaneously observed at room temperature. The blue was originated from the 1G4 → 3H6 transition of Tm3+; the green (525 and 550 nm), and red (650 nm) upconversion luminescences were identified from the 2H11/2 → 4I15/2, 4S3/2 → 4I15/2 and 4F9/2 → 4I15/2, transitions of Er3+ respectively. Different concentrations of Tm2O3 and Yb2O3 were used in order to see the influence on the RGB upconversion properties. The intense red, green and blue upconversion luminescence of these glasses might provide the development of potential three-dimensional displays.