15.03.2016 | Ausgabe 7/2016
Investigation of luminescence properties and the energy transfer mechanism of LiSrBO3: Ce3+, Tb3+ phosphors
Abstract
A series of LiSrBO3:Ce3+, Tb3+ phosphors have been prepared via a high-temperature solid-state reaction process. X-ray diffraction (XRD), scanning electric microscopy (SEM), photoluminescence (PL) spectra, and the diffuse reflection spectra were utilized to characterize the samples. The luminescence properties of LiSrBO3:Ce3+, Tb3+ phosphors have been discussed. The energy transfer process from Ce3+ to Tb3+ has been demonstrated to be a resonant type via the dipole–dipole interaction mechanism. The emissive colors of LiSrBO3:Ce3+, Tb3+ samples can be adjusted from blue to yellowish-green by the energy transfer of Ce3+ and Tb3+, respectively. The results suggest the present phosphors can be potentially applied as a candidate of green-light phosphor for UV-pumped W-LED.