Fig. 3From: Tm3+ Modified Optical Temperature Behavior of Transparent Er3+-Doped Hexagonal NaGdF4 Glass Ceramics(a) The luminescence spectra and (b) red to green intensity ratio of 1%Er3+,x%Tm3+-co-doped NaGdF4 (x = 0, 0.05, 0.1, 0.15, 0.2)Back to article page