Luminescence properties of Lu3M5O12:Eu3+ (M = Al, Ga) and effects of Bi3+ co-dopant

• Published in: Journal of sol-gel science and technology Vol. 76; no. 1; pp. 43 - 49
• Main Authors: Zhu, Xian-zhong, Chu, Cheng-lin, Chu, Paul K.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.10.2015; Springer Nature B.V
• Subjects: Bismuth; Ceramics; Chemistry and Materials Science; Codopants; Composites; Crystal structure; Crystals; Emission spectra; Energy levels; Europium; Excitation spectra; Glass; Inorganic Chemistry; Luminescence; Materials Science; Nanotechnology; Natural Materials; Optical and Electronic Materials; Optical properties; Original Paper; Particle size distribution; Phosphors; Spray pyrolysis; X-ray diffraction; Eu; Spray pyrolysis; Luminescence properties; Lu; Ga; Al; Energy transfer; O
• ISSN: 0928-0707; 1573-4846
• DOI: 10.1007/s10971-015-3748-7

The Eu 3+ -doped and Eu 3+ , Bi 3+ co-doped Lu 3 M 5 O 12 (LuMG where M = Al, Ga) phosphors are synthesized by spray pyrolysis, and the crystal structure, micromorphology, luminescence properties and effects of Bi 3+ co-dopant are investigated. X-ray diffraction reveals that the crystal structures of the matrices do not change after partial replacement of Lu 3+ by Eu 3+ and Bi 3+ . The phosphors exhibit the same spherical micromorphology without agglomeration and particle size distribution with a typical diameter of about 0.7 μm. The emission and excitation spectra show transitions associated with the Eu 3+ 4f configurations. 7 F 1 energy level splitting of Eu 3+ in Lu 3 Al 5 O 12 :Eu and stronger luminescence of Lu 3 Ga 5 O 12 :Eu are observed, and the quenching concentrations of Eu 3+ in Lu 3 Al 5 O 12 :Eu and Lu 3 Ga 5 O 12 :Eu are 6 and 10 mol% with respect to Lu 3+ , respectively. Introduction of Bi 3+ enhances the emission of Eu 3+ accompanied by the transition emission of Bi 3+ . Graphical Abstract