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Abstract
Infrared luminescent materials have evoked much attention from chemists and material scientists. Although substantial progress is made in materials design, the luminescent mechanism remains ambiguous in the complex structures, presenting major barriers to developing novel infrared luminescent materials. Herein, this study aims to deliberate a complete discussion on infrared phosphors with concentration-induced hetero-valent partial-inverse occupation. High-resolution synchrotron X-ray diffraction and Raman spectroscopy reveal the subtle structural change in LiGa5(1−x)O8:5xCr3+. Besides, Cr K-edge wavelet analysis and extended X-ray absorption fine structure illustrate the impact of Cr in the second shell of another Cr ion and the practical coordination of Ga and Cr ions. Furthermore, unexpected two-center Cr3+ emissions and the Cr–Cr pair emission are observed at high Cr concentrations. Variation between the zero-phonon line and N-line at different temperatures is demonstrated. Finally, the structural and luminescent properties are comprehensively discussed, providing the origin of the unexpected Cr2 emission. This study not only provides insight into the hetero-valent partial-inverse occupation process in inorganic materials but also sheds light on developing novel infrared luminescent materials.
Citations
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Authors (8)
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Jia‐Yu Hsu
- Research Center for Applied Sciences, Academia Sinica, Taipei, 10608 Taiwan
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Ren-jei Chung
- Institute of Manufacturing Technology, Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei, 10608 Taiwan
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Yen‐Ling Kuo
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei, 10608 Taiwan
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Chun Che Lin
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei, 10608 Taiwan
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Natalia Majewska
- Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk
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Sebastian Mahlik
- Institute of Experimental Physics, Faculty of Mathematics, Physics and Informatics, University of Gdańsk
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Mu-huai Fang
- Research Center for Applied Sciences, Academia Sinica, Taipei, 10608 Taiwan
Cite as
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Advanced Optical Materials
no. 11,
pages 1 - 9,
ISSN: 2195-1071 - Language:
- English
- Publication year:
- 2023
- Bibliographic description:
- Kreft D., Hsu J., Chung R., Kuo Y., Lin C. C., Majewska N., Mahlik S., Fang M.: Concentration‐Induced Hetero‐Valent Partial‐Inverse Occupation of Infrared Phosphor// Advanced Optical Materials -Vol. 11,iss. 14 (2023), s.1-9
- DOI:
- Digital Object Identifier (open in new tab) 10.1002/adom.202300121
- Sources of funding:
-
- COST_FREE
- Verified by:
- Gdańsk University of Technology
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