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Blue up-conversion emission of Yb3+-doped langbeinite salts
Affiliation:1. Laboratoire d’Application de la Chimie aux Ressources et Substances Naturelles et à l’Environnement, Département de Chimie, Université de Carthage, Faculté des Sciences de Bizerte, Zarzouna, Bizerte 7021, Tunisia;2. Departamento de Física, Universidad de la Laguna, 38206 La Laguna, Spain;1. Laboratoire de Physico Chimie de l''Atmosphère, EA 4493 Université du Littoral Côte d''Opale, 59140 Dunkerque, France;2. Institut des Sciences Chimiques de Rennes, Eq. Verres et Céramiques, UMR CNRS 6226, Université de Rennes 1, 35042 Rennes Cedex, France;1. Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;1. Department of Materials Science and Technology, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;2. Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;3. Center of Excellence in Nanotechnology for Energy (CENE), Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand;1. The Beijing Municipal Key Laboratory of New Energy Materials and Technologies, School of Materials Sciences and Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. School of Materials Sciences and Technology, China University of Geosciences, Beijing 100083, China
Abstract:Yb3+-doped langbeinite salts were prepared by the solid solution method. X-ray diffraction patterns and vibrational spectroscopy confirmed that all obtained phases are highly pure, iso-structural and they crystallize in the cubic system with the space group P213. The emission luminescence comes from the 2F5/2  2F7/2 transition of Yb3+ ions. Moreover, intense blue cooperative emission was observed at 476 nm under excitation in the near infrared at 975 nm.
Keywords:Langbeinite salts  Infrared spectroscopy  Cooperative luminescence  Blue up-conversion
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