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Study on preparation and luminescent properties of Eu3+-doped LaAlO3 and GdAlO3
Authors:Xiaorui Dong  Xiaoyun Cui  Zuoling Fu  Shihong Zhou  Siyuan Zhang  Zhenwen Dai
Affiliation:1. State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, China;2. Key Lab of Coherent Light, Atomic and Molecular Spectroscopy, Ministry of Education, Changchun 130012, China;3. State Key Laboratory of Rare Earth Resources Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;1. Laboratoire de Physique Appliquée, Faculté des Sciences, B.P. 1171, 3000 Sfax, Université de Sfax, Tunisie;2. I3N and Physics Department, University of Aveiro, 3810-193 Aveiro, Portugal;1. Research Center, Department of Science, East West Institute of Technology, VTU, Bengaluru-560091, India;2. Prof. C.N.R. Rao center for Advanced Materials, Tumkur University, Tumkur-572103, India;1. Department of Medical Instruments Technology, Technological Educational Institute of Athens, 122 10 Athens, Greece;2. Department of Medical Physics, Medical School, University of Patras, 265 00 Patras, Greece;3. Department of Conservation of Antiquities and Works of Art, Technological Educational Institute of Athens, 122 10 Athens, Greece
Abstract:Eu3+-doped trigonal LaAlO3 and orthorhombic GdAlO3 phosphors have been successfully synthesized by sol–gel method. The crystallization processes of the phosphors have been characterized by X-ray diffraction (XRD) and thermogravimetry-differential scanning calorimetry (TG-DSC). The optical properties of these phosphors were investigated using the photoluminescence (PL) and photoluminescence excitation (PLE) spectra. The influences of the different structures and bonding of the hosts on the luminescence performance of Eu3+ ion-doped LaAlO3 and GdAlO3 were investigated in detail based on chemical bond theory. Under appropriate UV-radiation, the reddish orange light emitted from GdAlO3:Eu3+ was brighter than that from LaAlO3:Eu3+. Such a brightly luminescent phosphor could be considered as an ideal optical material for the development of new optical display systems.
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