Structural and luminescence properties of CaTiO{sub 3}:Eu{sup 3+} phosphor synthesized by chemical co-precipitation method for the application of solid state lighting devices
- Department of Applied Physics, Indian School of Mines, Dhanbad-826004 (India)
The present work report a series of trivalent Europium (Eu{sup 3+}) doped well crystallized perovskite CaTiO{sub 3} phosphors successfully synthesized by chemical co-precipitation method. The crystal structure was confirmed by X-ray diffraction (XRD) which is in good agreement with pure orthorhombic phase with space group Pbnm, and it also indicated that the incorporation of the dopant did not affect the crystal structure. The impact of doping on the photoluminescence performances of the sample has been investigated by emission, excitation, and diffuse reflectance spectra at the room temperature. Photoluminescence spectra of Eu{sup 3+} doped CaTiO{sub 3} nanophosphor revealed the characteristic emission peak around wavelength 618 nm in the visible region upon the excitation of near-UV light at wavelength 397 nm due to {sup 5}D{sub 0} → {sup 7}F{sub 2} transition in Eu{sup 3+}. It was further proved that the dipole– dipole interactions results in the concentration quenching of Eu{sup 3+} in CaTiO{sub 3}:Eu{sup 3+} nanophosphors. The elemental composition of sample carried out by energy dispersive spectroscopy (EDS). EDS analysis reveals that the Eu{sup 3+} doped successfully into host CaTiO{sub 3}. The experimental result reveals that prepared nanophosphor can be used in the application of solid state lighting devices.
- OSTI ID:
- 22606542
- Journal Information:
- AIP Conference Proceedings, Vol. 1728, Issue 1; Conference: ICC 2015: International conference on condensed matter and applied physics, Bikaner (India), 30-31 Oct 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fabrication and optical properties of core-shell structured spherical SiO{sub 2}.GdVO{sub 4}:Eu{sup 3+} phosphors via sol-gel process
Defect correlated fluorescent quenching and electron phonon coupling in the spectral transition of Eu{sup 3+} in CaTiO{sub 3} for red emission in display application
Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CALCIUM COMPOUNDS
CONCENTRATION RATIO
COPRECIPITATION
CRYSTALS
DIPOLES
DOPED MATERIALS
EUROPIUM ADDITIONS
EXCITATION
ORTHORHOMBIC LATTICES
PEROVSKITE
PHOSPHORS
PHOTOLUMINESCENCE
QUENCHING
SPACE GROUPS
SPECTRA
SPECTROSCOPY
TITANATES
ULTRAVIOLET RADIATION
X RADIATION
X-RAY DIFFRACTION