Nonlinear blue upconversion luminescence in Gd2O3: Er3+/Yb3+ nanowires |
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| Authors: | Linmei Yang Shanyu Quan Yudong Yang Zhijie Li Wei Wang Lianquan Guo |
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| Affiliation: | 1. Instituto de Física de São Carlos, Universidade de São Paulo, CP 369, 13560-970, São Carlos, SP, Brazil;2. Departamento de Física, Universidade Estadual de Maringá, Av. Colombo, 5790, 87020-900 Maringá, PR, Brazil;1. State Key Laboratory of Materials Processing and Die Mould Technology, Huazhong University of Science and Technology (HUST), No. 1037, Luoyu Road, Wuhan 430074, China;2. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Wuhan 430062, China;3. State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, No. 122, Luoshi Road, Wuhan 430070, China;1. College of Mechanics and Materials, Hohai University, Nanjing, 210098, PR China;2. School of Materials Science and Engineering, Southeast University, Nanjing, 211189, PR China |
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| Abstract: | Gd2O3: Er3+/Y b3+ nanowires were prepared by a hydrothermal method. The upconversion luminescence was studied with 978-nm excitation. Ultraviolet and blue upconversion luminescence in which thermalization processes were involved, green and red upconversion luminescence were observed respectively. We analyzed the mechanism of upconversion luminescence. According to the ratio of 2 H11/2–4I15/2 emission intensity to 4 S3/2–4I15/2 emission intensity, the temperature of the sample exposed to radiation of 978-nm laser was given. |
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