CaLa 2 ZnO 5:Gd 3+phosphor prepared by sol-gel method: Photoluminescence and electron spin resonance properties

Singh, Vijay; Natarajan, V; Singh, N.; Srivastava, Anoop K.; Kwon, Young-Wan; Lakshminarayana, G.

doi:10.1016/j.ijleo.2020.164247

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CaLa 2 ZnO 5:Gd 3+phosphor prepared by sol-gel method: Photoluminescence and electron spin resonance properties

Singh, Vijay;
Natarajan, V;
Singh, N.;
Srivastava, Anoop K.;
Kwon, Young-Wan;
외 1명

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초록

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), electron spin resonance (ESR), and photoluminescence (PL) spectroscopic techniques. PL spectra exhibited a strong emission peak at 314 nm, showing the presence of Gd3+ ions in a CaLa2ZnO5 host lattice. This peak corresponded to 6P7/2 → 8S7/2 transition of Gd3+ ion under 227 nm excitation. ESR studies suggested Gd goes in the CaLa2ZnO5 matrix as Gd3+. By correlating the PL and ESR spectral data, the probable site symmetry of Gd3+ ion is proposed in the host matrix. © 2020 Elsevier GmbH

키워드

CaLa2ZnO5; ESR; Gd3+; Luminescence; Phosphor; Sol-gel; UP-CONVERSION LUMINESCENCE; QUANTUM EFFICIENCY; RED LUMINESCENCE; PHOSPHORS; CALA2ZNO5; NANOPARTICLES; PHOTOTHERAPY; MORPHOLOGY; HO3+; EPR

제목: CaLa 2 ZnO 5:Gd 3+phosphor prepared by sol-gel method: Photoluminescence and electron spin resonance properties

저자: Singh, Vijay; Natarajan, V; Singh, N.; Srivastava, Anoop K.; Kwon, Young-Wan; Lakshminarayana, G.

DOI: 10.1016/j.ijleo.2020.164247

발행일: 2020-06

유형: Article

저널명: Optik

권: 212