Synthesis and spectral investigations of Cu(II) ion‐doped NaCaAlPO4F3 phosphor |
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| Authors: | V. Pushpa Manjari Ch. Rama Krishna Ch. Venkata Reddy R. V. S. S. N. Ravikumar |
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| Affiliation: | Department of Physics, Acharya Nagarjuna University, India |
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| Abstract: | Cu(II) ion‐doped NaCaAlPO4F3 phosphor has been synthesized using a solid state reaction method. The prepared sample is characterized by powder X‐ray diffraction, scanning electron microscope, optical absorption, electron paramagnetic resonance photoluminescence and Fourier transform infrared spectroscopy techniques. The crystallite size evaluated from x‐ray diffraction data is in nanometers. Scanning electron microscopy micrographs showed the presence of several irregular shaped particles. From optical absorption and electron paramagnetic resonance spectral data the doped Cu(II) ions are ascribed to distorted octahedral site symmetry. The synthesized phosphor exhibits emission bands in ultraviolet, blue and green regions under the excitation wavelength of 335 nm. The CIE chromaticity coordinates (x = 0.159, y = 0.204) also calculated for the prepared sample from the emission spectrum. The Fourier transform infrared spectroscopy spectrum revealed the characteristic vibrational bands of the prepared phosphor material. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | NaCaAlPO4F3 phosphor Cu(II) ions optical absorption crystal field parameters electron paramagnetic resonance bonding parameters |
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