Selective Synthesis and Luminescence Properties of Nanocrystalline GdF3:Eu3+ with Hexagonal and Orthorhombic Structures. (27th December 2010)

• Record Type: Journal Article
• Authors: Zhang, Xiaoting; Hayakawa, Tomokatsu; Nogami, Masayuki; Ishikawa, Yukari
• Other Names: Joshi Rakesh Academic Editor.
• Is Part Of: Journal of nanomaterials. Volume 2010(2010)
• Publication Date: 2010-12-27
• Subjects: Nanostructured materials -- Periodicals; Nanotechnology -- Periodicals; Nanomatériaux; Nanostructured materials; Nanotechnology; Nanostructures; Nanotechnology; Periodicals; Fulltext; Internet Resources; Periodicals; 620.115
• DOI: 10.1155/2010/651326
• Languages: English
• ISSNs: 1687-4110

Abstract

Abstract : GdF3 :Eu 3+ nanophosphors with hexagonal or orthorhombic structure have been succeeded to be selectively synthesized at room temperature for the first time via a simple soft chemical route. The structure and morphology of GdF3 :Eu 3+ nanophosphors were controlled by using different fluoride precursors. Hexagonal GdF3 :Eu 3+ nanocrystals were formed when NaBF4 was used as a fluoride precursor, while orthorhombic GdF3 :Eu 3+ nanocrystals were obtained with NaF or NH4 F fluoride precursor. It was also experimentally revealed that hexagonal GdF3 :Eu 3+ nanophosphors emitted essentially stronger Eu 3+ luminescence than orthorhombic ones did. The formation mechanism of GdF3 nanocrystals and the possible reasons of the strong PL in hexagonal were discussed.