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Spectroscopic studies of CaYAl3O7 doped with Ce3+, Tb3+, Eu3+ and Sm3+ were performed from visible to vacuum ultraviolet (VUV) at room temperature and showed the characteristic emission of the dopants. From the excitation curves,4f-5d transitions were identified for Ce3+ and Tb3+ and charge transfer processes were observed for Eu3+ and Sm3+. The experimental data were used to predict the energy levels...