Figure 7
From: A novel optical thermometry based on the energy transfer from charge transfer band to Eu3+-Dy3+ ions
(a) PL Emission spectra, (b) Temperature-dependent spectra at 572 nm and 615 nm, (c) CIE, (d) Calculated lifetimes of 4F9/2 (Dy3+) and 5D0 (Eu3+) energy levels of Dy3+ and Eu3+ ions of the SrWO4: 0.4 mol% Eu3+, 4 mol% Dy3+ phosphor under 266 nm excitation from 11 K to 529 K.
