Abstract
Cu(II) ions doped Calcium borophosphates were prepared by solid state reaction method. In this study, we investigate the structural and optical properties of CuxCa6−xBP5O20 (x = 0.01, 0.03, 0.05) nanophosphors, depending on copper content. The xCuCa6−xBP5O20 nanophosphor shows high-quality powder characteristics by XRD and exhibited stillwellite like structure. Field emission scanning electron microscopy micrographs showed the presence of several irregular shaped particles. FT-IR spectrum revealed the characteristic vibrational bands of the prepared nanophosphor material. 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 325 nm. The CIE chromaticity coordinates are also calculated for the prepared sample from the emission spectrum.
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