Fabrication and characterizations of (Lu,Gd)2O3:Eu scintillation ceramics |
| |
| Affiliation: | 1. School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China;2. Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;3. Department of Physics, Shanghai Normal University, Shanghai 200234, China;1. Centre for Nanoscience and Technology, Pondicherry University, RV Nagar, Kalapet, Puducherry 605 014, India;2. Nano photonics laboratory, Department of Physics, Indian Institute of Technology-Delhi, New Delhi 110 016, India.;1. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China;2. University of the Chinese Academy of Science, Beijing 100039, China;1. Key Laboratory of Transparent Opto-functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, China;2. University of Chinese Academy of Sciences, Beijing, 100049, China;3. Department of Physics, Shanghai Normal University, Shanghai, 200234, China;4. Department of Materials Science, University of Milano-Bicocca, Via Cozzi 55, 20125, Milano, Italy;5. Institute of Physics AS CR, Prague, 16200, Czech Republic;6. Institute of Crystal Growth, School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai, 201418, China;1. Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China;2. Nano Ceramics Center, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan;1. Laboratório de Materiais Inorgânicos Fotoluminescentes e Polímeros Biodegradáveis (LAFOP), Grupo de Pesquisa em Química de Materiais – (GPQM), Departamento de Ciências Naturais, Universidade Federal de São João Del Rei, Campus Dom Bosco, Praça Dom Helvécio, 74, 36301-160, São João Del Rei, MG, Brazil;2. Instituto de Química, UNESP, P.O. Box 355, 14800-970, Araraquara, SP, Brazil |
| |
| Abstract: | In this paper, (Lu,Gd)2O3:Eu ceramics were consolidated by the solid-state reaction method combined with vacuum sintering at 1820 °C for 10 h. It is found that the Gd2O3 incorporates well into the Lu2O3 lattices and forms a solid solution. Particularly, strong red emission of 5D0→7F2 transition of Eu3+ at 611 nm, matched well to the spectral sensitivity of typical CCD arrays, was observed in the photoluminescence and radioluminescence spectra. What's more, radioluminescence intensity of the 4f→4f transitions of Eu3+ reaches up to 10 times of bismuth germanium oxide (BGO) single crystal reference scintillator. Intensities of the radioluminescence and the integrated thermoluminescence versus temperatures, as well as the influence of annealing treatment on the thermoluminescence intensity, were also studied. We think that (Lu,Gd)2O3:Eu ceramic scintillators may have great potential in medical X-ray computed tomography (CT) due to their excellent properties. |
| |
| Keywords: | Ceramic scintillators Fluorescent lifetime Thermally stimulated luminescence Oxygen vacancies |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
