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Title: Rapid synthesis of Tb3+-doped gadolinium oxyhydroxide and oxide green phosphors and their biological behaviour
Authors: Wani, Saima
Majeed, Shafquat
Shivashankar, S A
Keywords: Rare earths;Self-assembly;Nanomaterials;Optical materials;Photoluminescence;Phosphors;Green phosphors;Terbium doping;Gadolinium;Oxyhydroxides;Oxides
Issue Date: Dec-2017
Publisher: NISCAIR-CSIR, India
Abstract: Green phosphors based on terbium doped GdOOH and Gd2O3 powders are prepared through a rapid microwave-assisted solution based method using ethanol as a solvent and without using any surfactants. The as-prepared Tb3+:GdOOH powders are crystalline and show a flower-like morphology comprising many two-dimensional flake-like structures. The as-prepared powders show good luminescence properties under UV excitation and their conversion to Tb3+:Gd2O3 by annealing takes place at modest temperatures. A considerable increase in luminescence intensity is observed for the annealed powders, which is ascribed to phase change from oxyhydroxide to oxide as well as an increase in crystallinity as a result of annealing. Cytotoxicity studies reveal that the as-prepared powders show considerable toxicity towards the cells, whereas the annealed powders do not hamper the cell growth.
Page(s): 1285-1292
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.56A(12) [December 2017]

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