Excitation dependent emission of terbium aluminium garnet doped with gadolinium. (May 2020)

• Record Type: Journal Article
• Authors: Kaur, Jasmeen; Rani, Suman; Lal, Bansi
• Is Part Of: Journal of physics. Volume 1531(2020)
• Publication Date: 2020-05
• Subjects: TAG -- Gd -- Photoluminescence -- energy transfer; Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1531/1/012026
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: This study reports the emission (400-700nm) properties of Gd (0.1, 0.5, 1.0 mol%) doped TAG nanophosphor synthesized by sol gel technique. Powder XRD spectra of doped TAG were indexed using JCPDS file No. 17-0735 implying that the basic structure of TAG remained unchanged on doping. The emission was excited with 280, 380 and 460nm radiation from a Xe lamp. The spectral features of the emission spectra were almost independent of both the doping as well as the excitation radiation. However, Gd concentration dependent variations in the emission intensity were observed. The observed emission intensity was maximum in TAG doped with 0.5mol% Gd while quenching was observed at 1.0mol% concentration level. This concentration dependent intensity variation which also depended on the wavelength of the excitation radiation could be due to energy exchange between Gd and Tb ions.