Minimizing Bond Angle Distortion to Improve Thermal Stability of Cr3+ Doped Near-Infrared Phosphor
文献类型：期刊论文
| 作者 | L. Zhang, D. Wang, F. Liu, H. Wu, G. Pan, H. Wu, Z. Hao, H. Zhang and J. Zhang |
| 刊名 | Laser and Photonics Reviews
 |
| 出版日期 | 2023 |
| 卷号 | 17期号:9 |
| ISSN号 | 18638880 |
| DOI | 10.1002/lpor.202300092 |
| 英文摘要 | Broadband near-infrared (NIR) phosphor-converted light-emitting diodes are next-generation smart NIR light sources. However, the NIR phosphor suffers from serious thermal quenching (TQ), resulting in efficiency reduction and spectral shift. Here, a novel strategy is realized to suppress TQ by minimizing bond angle distortion, completely different from the conventional TQ suppression approach through bond length variation. Li(Sr1−xCax)AlF6:Cr3+ NIR phosphor is taken as an example in which rotation between the two parallel fluorine planes perpendicular to the C3 axis in the [AlF6] octahedron is found to dominate TQ. Increasing x from 0 to 1 reduces the amplitude of the rotation from 16.17° to 5.06°, weakening the electron–phonon coupling and, consequently, raising the TQ temperature significantly from 320 to 570 K. This mechanism is elucidated from both theoretical calculations and spectroscopic studies. The findings open a new horizon for the exploration of thermally stable NIR phosphors. © 2023 Wiley-VCH GmbH. |
| URL标识 | 查看原文 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/68181]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | L. Zhang, D. Wang, F. Liu, H. Wu, G. Pan, H. Wu, Z. Hao, H. Zhang and J. Zhang. Minimizing Bond Angle Distortion to Improve Thermal Stability of Cr3+ Doped Near-Infrared Phosphor[J]. Laser and Photonics Reviews,2023,17(9). |
| APA | L. Zhang, D. Wang, F. Liu, H. Wu, G. Pan, H. Wu, Z. Hao, H. Zhang and J. Zhang.(2023).Minimizing Bond Angle Distortion to Improve Thermal Stability of Cr3+ Doped Near-Infrared Phosphor.Laser and Photonics Reviews,17(9). |
| MLA | L. Zhang, D. Wang, F. Liu, H. Wu, G. Pan, H. Wu, Z. Hao, H. Zhang and J. Zhang."Minimizing Bond Angle Distortion to Improve Thermal Stability of Cr3+ Doped Near-Infrared Phosphor".Laser and Photonics Reviews 17.9(2023). |
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