Sol-gel assisted optical and structural investigation of Dy3+/Tb3+ activated/co-activated CaTiO3 perovskite phosphors by energy transfer mechanism

In the present investigation, Dy3+, Tb3+ activated/co-activated CaTiO3 phosphor prepared by Sol-gel pechini technique. The XRD pattern of the reported phosphor demonstrates crystalline nature, and prepared phosphor's XRD synchronized with the ICSD record. Phase identification and crystal structure of prepared phosphor is examined by Rietveld refinement. Vibrational features of proposed phosphors were verified via Fourier Transform Infrared Spectroscopy (FT-IR). Morphological study of the proposed phosphor is investigated by SEM analysis. Photoluminescence (PL) investigation of phosphor sample was confirmed by employing a SHIMADZU Spectrofluorophotometer RF-5301 PC. Photoluminescence study of the proposed phosphor shows three visible emission peaks that occur simultaneously gives white light emission. These all results confirm the suggested phosphor is a possible competitor for WLEDs and solid state lighting applications.