Structure and Optical Properties of Calcium Titanates Perovskite doped with Er3+/Yb3+ and Er3+/Yb3+/Nd3+ ions

Author(s)	Ms. Anshu Singh, Dr. Preeti Gupta
Country	India
Abstract	Calcium Titanates doped with trivalent Er, Er/Yb, and Er/Yb/Nd ions have been prepared by solid-state route. XRD patterns are recorded for materials and the Rietveld structural analysis shows orthorhombic crystal structure with space group Pbnm. The HRSEM image of undoped CaTiO3 and doped material indicate agglomerate of spherical particles. Results obtained from EDS analysis proves the presence of elements i.e. Ca, Er, Yb, Nd, Ti and O in the phosphor material with appropriate compositional homogeneity. The FTIR spectra confirm the characteristic vibrational features of the perovskite lattice. Optical band gap of prepared phosphor materials increases with incorporation of Ln3+ ions. Hence, the perovskite phosphors may be very beneficial in solid-state lighting, display devices and white light emitting diodes (LEDs).
Keywords	Solid State Synthesis, Perovskite, Lanthanide ions, Optical band gap, CaTiO3
Field	Chemistry
Published In	Volume 7, Issue 6, November-December 2025
Published On	2025-11-22
DOI	https://doi.org/10.36948/ijfmr.2025.v07i06.61353
Short DOI	https://doi.org/hbb768

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