Highly Efficient Three-Photon Excited Red Emission in the Yb3+-Er3+ Upconversion System at Low Excitation Intensities for Non-Invasive Anti-Counterfeiting
文献类型：期刊论文
| 作者 | H. Wu, K. Wang, L. Zhang, Y. Luo, G. Pan, H. Wu, Z. Hao, F. Liu, X. Wang and J. Zhang |
| 出版日期 | 2023 |
| ISSN号 | 21951071 |
| DOI | 10.1002/adom.202302530 |
| 英文摘要 | Upconversion (UC) phosphors exhibiting luminescence color tuning (LCT) through variations in infrared excitation intensity offer great potential for high-security anti-counterfeiting applications. However, the current LCT capability is limited to high excitation intensities, hindering developments of non-invasive counterfeit detection. In this study, two orders of magnitude reduction are achieved in excitation intensities for LCT in YF3:Yb/Er, accomplished by attaining an unprecedentedly efficient three-photon excited red emission for mixing with the two-photon excited green emission. To enable this breakthrough, deoxygenation techniques are employed during sample preparations, which surprisingly prevent concentration quenching of Yb3+ ions, facilitating efficient three-photon excitation of the red emission for Yb3+ concentrations ≥ 30% even at excitation intensities as low as 10 mW cm−2. At excitation intensities of 100 mW cm−2, the three-photon excitation contributes to 91–94% of the red emission, resulting in an 11–17-fold increase in the red-to-green intensity ratio. This low-excitation-induced LCT, shifting from green to orange, showcases its potential for anti-counterfeiting. Furthermore, present YF3:Yb/Er phosphors demonstrate an impressive UC quantum yield of 7.8%, surpassing the popular NaYF4:Yb/Er phosphor (5.6%) under the same excitation intensity of 31.8 W cm−2. These findings represent a significant advancement in highly efficient UC fluoride phosphors, promising diverse applications across various fields. © 2023 Wiley-VCH GmbH. |
| URL标识 | 查看原文 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/68021]  |
| 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 | H. Wu, K. Wang, L. Zhang, Y. Luo, G. Pan, H. Wu, Z. Hao, F. Liu, X. Wang and J. Zhang. Highly Efficient Three-Photon Excited Red Emission in the Yb3+-Er3+ Upconversion System at Low Excitation Intensities for Non-Invasive Anti-Counterfeiting[J],2023. |
| APA | H. Wu, K. Wang, L. Zhang, Y. Luo, G. Pan, H. Wu, Z. Hao, F. Liu, X. Wang and J. Zhang.(2023).Highly Efficient Three-Photon Excited Red Emission in the Yb3+-Er3+ Upconversion System at Low Excitation Intensities for Non-Invasive Anti-Counterfeiting.. |
| MLA | H. Wu, K. Wang, L. Zhang, Y. Luo, G. Pan, H. Wu, Z. Hao, F. Liu, X. Wang and J. Zhang."Highly Efficient Three-Photon Excited Red Emission in the Yb3+-Er3+ Upconversion System at Low Excitation Intensities for Non-Invasive Anti-Counterfeiting".(2023). |
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