Substitutional solubility limit for Ce3+ ions in Lu3Al5O12:xCe3+ and its effect on photoluminescence. (August 2017)

• Record Type: Journal Article
• Authors: Ahn, Wonsik; Kim, Young Jin
• Is Part Of: Ceramics international. Volume 43(2017)Supplement 1
• Page Start: S412
• Page End: S416
• Publication Date: 2017-08
• Subjects: A. Powders: solid state reaction -- B. X-ray methods -- C. Optical properties -- Lutetium aluminum garnet; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.05.221
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The substitutional solubility for the Ce 3+ ions in Lu3 Al5 O12 was estimated using crystal structure refinement and measurement of the luminescence. The photoluminescence excitation spectra of Lu3 Al5 O12 :Ce 3+ powders were composed of two peaks at approximately 347 nm and 450 nm, respectively, owing to the ground-state doublet of the Ce 3+ ions, while a single emission band was observed in the green region. The solubility limit for the Ce 3+ ions was determined by measurement of the actual Ce 3+ concentrations in the particles, the refined crystal parameters, the evolution of the photoluminescence spectra, and the critical distance for energy transfer between the Ce 3+ ions; the limits were approximately 1.7 and 3 mol% for 1600 and 1700 °C, respectively.