Preparation and up-conversion luminescence characteristics studies of K3YF6: Ho3+, Yb3+ with cryolite structure

Novel high entropy (Y0.2Sm0.2Gd0.2Er0.2Ho0.2)3NbO7 nanofibers with ultralow thermal conductivity

“…38 Considering that the Ho 4d peaks overlap with the Y 3d peaks, the peaks at 161.3 eV and 159.3 eV in Figure 4E correspond to Ho 4d 3/2 and Ho 4d 5/2 , respectively. 39 These two binding energies of Ho 4d verified the existence of Ho 3+ state. While the Y 3d peaks, located at binding energies of 156.8 eV and 158.6 eV, were attributed to the Y 3+ state.…”

“…Er 4d XPS peak (Figure 4D) revealed that the binding energy was 168.5 eV, which can be assigned to the Er 3+ 38 . Considering that the Ho 4d peaks overlap with the Y 3d peaks, the peaks at 161.3 eV and 159.3 eV in Figure 4E correspond to Ho 4d 3/2 and Ho 4d 5/2 , respectively 39 . These two binding energies of Ho 4d verified the existence of Ho 3+ state.…”