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Nie L, Jia K, Guo H, He J, Weng Z, Li Y, Ju H. Effect of Tb 3+ and Ce 3+ Co-doping on the Structure and Photoluminescence Properties of Hexagonal Boron Nitride Phosphors. J Fluoresc 2024:10.1007/s10895-024-03663-3. [PMID: 38520621 DOI: 10.1007/s10895-024-03663-3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Accepted: 03/11/2024] [Indexed: 03/25/2024]
Abstract
In the paper, we have successfully prepared hexagonal boron nitride (h-BN:Tb3+, Ce3+) phosphors with melamine as the nitrogen source. The X-ray powder diffraction patterns confirm that the sample possesses a hexagonal crystal structure within the P 6 ¯ m2 space group. It is interesting that the co-doping combination of Tb3+ and Ce3+ can markedly enhance the threshold concentration of doped activators within the limited solid solution of h-BN phosphors. Under 302 nm excitation, the h-BN:Ce3+ phosphors exhibit broadband blue light emission at 406 nm. In h-BN:Tb3+, Ce3+ phosphors, the co-doping of Ce3+ not only ensures high phase purity but also results in strong green light emission. The energy transfer efficiency from Ce3+ to Tb3+ is about 55%. The fluorescence lifetime increases with the increase of Ce3+ and Tb3+ concentration, and the fluorescence lifetime of h-BN:0.025Tb3+, 0.05Ce3+ phosphor reached 2.087 ms. Additionally, the h-BN:0.025Tb3+, 0.05Ce3+ phosphor exhibits excellent thermal performance with an activation energy value of 0.2825 eV. Moreover, the photoluminescence quantum yield of the sample exceeds 52%. Therefore, the h-BN:Tb3+, Ce3+ samples can be used as green phosphors for solid state lighting and fluorescent labeling.
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Affiliation(s)
- Lunshuai Nie
- College of Physics Science and Technology, Kunming University, Kunming, 650214, China
| | - Kai Jia
- College of Physics Science and Technology, Kunming University, Kunming, 650214, China
| | - Hongguang Guo
- School of Chemistry and Chemical Engineering, Kunming University, Kunming, 650214, China
| | - Jiaqin He
- College of Physics Science and Technology, Kunming University, Kunming, 650214, China
| | - Zhehui Weng
- School of Chemistry and Chemical Engineering, Kunming University, Kunming, 650214, China
| | - Yizhou Li
- School of Chemistry and Chemical Engineering, Kunming University, Kunming, 650214, China
| | - Haidong Ju
- School of Chemistry and Chemical Engineering, Kunming University, Kunming, 650214, China.
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, Kunming University, Kunming, 650214, China.
- Yunnan Engineering Technology Research Center for Plastic Films, Kunming University, Kunming, 650214, China.
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Kamal R, Saif M. Barium tungstate doped with terbium ion green nanophosphor: Low temperature preparation, characterization and potential applications. Spectrochim Acta A Mol Biomol Spectrosc 2020; 229:117928. [PMID: 31884402 DOI: 10.1016/j.saa.2019.117928] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 12/05/2019] [Accepted: 12/06/2019] [Indexed: 06/10/2023]
Abstract
Production of Nano-Terbium doped barium tungstate and its potential applications as a phosphor in forensic science and anti-counterfeiting ink applications have not been reported in the literature to now. Herein, simple, sensitive and bi-functional green Nanophosphor based on BaWO4: xTb3+ was prepared and characterized for latent prints and anti-counterfeiting ink applications. High crystalline tetragonal BaWO4 phase was obtained with nano-spherical morphology. BWO: xTb3+ Nanophosphors emits a strong and dual green and bluish green colors which appear to the human eye upon UVC and UVA excitation resources, respectively. The lifetime values were increased with rising Tb3+ ion concentrations from 0.01 to 0.07 mol. BWO: xTb3+ Nanophosphor has successfully visualized latent print from various forensic non-porous and porous surfaces. Moreover, BWO: xTb3+ Nanophosphor was used to develop luminescent ink for anti-counterfeiting application.
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Affiliation(s)
- R Kamal
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, 11711 Cairo, Egypt.
| | - M Saif
- Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, 11711 Cairo, Egypt
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