“…Excitation radiation is absorbed by YVO 4 host with subsequent host emission or energy transfer to Eu 3+ ions. 32,33 Emission spectra include a broad band centered at 455 nm assigned to YVO 4 host luminescence and series of narrow peaks corresponding to transitions from metastable 5 D 0 level to lower-lying 7 F J levels of Eu 3+ ions (J = 1-4): 5 D 0 -7 F 1 (594 nm), 5 D 0 -7 F 2 (619 nm), 5 D 0 -7 F 3 (648 nm), and 5 D 0 -7 F 4 (698 nm). 34 It should be noted that YVO 4 :Eu 3+ 0.01 at.% displayed also transitions originated from higher excited Eu 3+ levels such as 5 D 2 -7 F 1 (475 nm), 5 D 2 -7 F 2 (483 nm), 5 D 1 -7 F 1 (538 nm), 5 D 1 -7 F 2 (553 nm), and 5 D 1 -7 F 3 (573 nm).…”