Tailoring red-green-blue emission from Er3+, Eu3+ and Tb3+ doped Y2O3 nanocrystals produced via PVA-assisted sol-gel route |
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| Affiliation: | 1. Programa de Pós-Graduação em Materiais, Universidade Federal de Alagoas, 57072-970 Maceió, AL, Brazil;2. Departamento de Física, Universidade Federal de Sergipe, Cidade Universitária Prof. José Aloísio de Campos, Rod. Marechal Rondon s/n, Jardim Rosa Elze, São Cristóvão, SE 49.100-000, Brazil;3. Instituto de Física, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, RS, Brazil;1. Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, People’s Republic of China;2. School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, People’s Republic of China;3. Department of Materials Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE), and TKL of Metal and Molecule- Based Material Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin, 300071, People’s Republic of China;1. Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Chemical Engineering, Henan University, China;2. Institute of Metal Research, Chinese Academy of Sciences, Division of Materials for Special Environments, China;3. Renewable Bioproduct Institute, Georgia Institute of Technology, United States;1. College of Pharmacy, Pusan National University, Busan, South Korea;2. College of Pharmacy, Korea University, Sejong, South Korea;1. Instituto Politécnico Nacional, CIITEC, Cerrada de Cecati S/N Col., Santa Catarina, C.P. 02250 Cd. de México, Mexico;2. CONACYT—Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, C.P. 25000 Saltillo, Coahuila, Mexico |
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| Abstract: | 
Y2O3 luminescent nanoparticles were synthesized via PVA-assisted sol-gel method and their structural and optical properties were investigated. Effects of rare earth (Er3+, Eu3+ and Tb3+) doping on luminescence properties of the produced nanophosphors have been investigated under NIR (800 nm) and UV (240–300 nm) excitation. Intense infrared to red and green emissions were observed and a weak blue upconverted luminescence was also detected. Moreover, it was observed that changing the doping ions, the color emitted by the samples could be modified and different combinations of UV excitation and doping produced effective white light emissions. The obtained results demonstrate that PVA-assisted sol-gel is an effective methodology for the synthesis of rare-earth doped Y2O3 nanophosphors. |
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| Keywords: | PVA assisted sol-gel Frequency upconversion Photoluminescence White light |
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