Synthesis, characterization and photoluminescent properties of Sm3+/Dy3+ doped strontium zirconate perovskites

Luminescence studies of a Li2Ca1−xSiO4:xSm3+ phosphor for the generation of white light under NUV‐excited phosphor converting LEDs

“…In the present study, when using 408 nm as the excitation wavelength, we have recorded the emission spectrum of Sm 3+ ‐doped phosphor and measured emission bands at 565, 605, 645 and 653 nm (Figure 5) that were properly assigned to the electronic transitions of 4 G 5/2 → 6 H 5/2 , 7/2 , 9/2 respectively. [ 9,31 ] Here, the electric dipole (ED) transition peak centred at 605 nm (red emission) dominated the magnetic dipole (MD) transition peak centred at 566 nm (orange emission). The ratio of intensity for red/orange (R/O) was 3:2, which means that the intensity of red emission dominated the intensity of orange emission.…”