CaLa2ZnO5:Gd3+ phosphor prepared by sol-gel method: Photoluminescence and electron spin resonance properties
作者： Vijay Singh , V. Natarajan , N. Singh , Anoop K. Srivastava , Young-Wan Kwon
DOI: 10.1016/J.IJLEO.2020.164247
关键词: Electron paramagnetic resonance 、 Sol-gel 、 Excitation 、 Photoluminescence 、 Analytical chemistry 、 Diffraction 、 Scanning electron microscope 、 Phosphor 、 Materials science 、 Ion
摘要: Abstract A sequence of Gd-doped CaLa2ZnO5 samples was synthesized through a sol gel method and their characterizations were done by X-ray diffraction (XRD), scanning electron microscope (SEM), spin resonance (ESR), photoluminescence (PL) spectroscopic techniques. PL spectra exhibited strong emission peak at 314 nm, showing the presence Gd3+ ions in host lattice. This corresponded to 6P7/2 → 8S7/2 transition ion under 227 nm excitation. ESR studies suggested Gd goes matrix as Gd3+. By correlating spectral data, probable site symmetry is proposed matrix.
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