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Han C, Li X, Duan Y, Shen R, Cheng L, Guan Z, Xu S, Sun J, Yu H, Chen B. Photoluminescence, optical transition properties and temperature-induced shift of charge transfer band and temperature sensing property of GdNbTiO 6: Sm 3+ phosphors. Spectrochim Acta A Mol Biomol Spectrosc 2021; 260:119951. [PMID: 34049007 DOI: 10.1016/j.saa.2021.119951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 05/09/2021] [Accepted: 05/09/2021] [Indexed: 06/12/2023]
Abstract
GdNbTiO6: Sm3+ phosphors with various Sm3+ concentrations were prepared via a high temperature solid-state reaction method. The crystal structure of the samples was characterized by means of X-ray diffraction (XRD) and the as-prepared samples were confirmed to be orthorhombic phase GdNbTiO6. Photoluminescence properties were investigated by measuring the concentration- and temperature-dependent photoluminescence spectra. Concentration-dependent luminescence quenching and luminescent thermal quenching behaviors were observed and they were respectively ascribed to the electric dipole-dipole interaction between Sm3+ ions and the cooperation of energy transfer and crossover process. The chromatic characteristics were found to be dependent on the excitation wavelength and Sm3+ concentration. In addition, temperature-induced redshift of charge transfer band of GdNbTiO6 host was found in temperature-dependent excitation spectra and the opposite variations of different excitation peaks were utilized for optical thermometry. Finally, the optical transition property was studied on the basis of the diffuse reflectance spectra and Judd-Ofelt (J-O) theory, meanwhile, its accuracy was evaluated by the result of emission spectra.
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Affiliation(s)
- Cong Han
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Xiangping Li
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China.
| | - Yangyinyi Duan
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Rensheng Shen
- School of Microelectronics, Dalian University of Technology, Dalian, Liaoning 116024, PR China.
| | - Lihong Cheng
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Zhipeng Guan
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Sai Xu
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Jiashi Sun
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Hongquan Yu
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China
| | - Baojiu Chen
- School of Science, Dalian Maritime University, Dalian, Liaoning 116026, PR China.
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