Тип публикации: статья из журнала

Год издания: 2024

Идентификатор DOI: 10.1002/adom.202301429

Аннотация: <jats:title>Abstract</jats:title><jats:p>Recently, an optical thermometer based on the dual-emitting fluorescent intensity ratio (FIR) in the visible light (VIS) region has achieved great development. However, there is very little progress in thermometers from NIR light. In this work, a novel optical thermometer based on highly effПоказать полностьюicient NIR dual-emission of Cr<jats:sup>3+</jats:sup> and Ni<jats:sup>2+</jats:sup> in LaZnGa<jats:sub>11</jats:sub>O<jats:sub>19</jats:sub> (LZG) with a magnetoplumbite structure is designed. Utilizing energy transfer from Cr<jats:sup>3+</jats:sup> to Ni<jats:sup>2+</jats:sup>, the dual-emission shows a wide coverage in the 650–1600 nm region, covering the NIR I and II windows, respectively. The as-reported LZG:0.3Cr<jats:sup>3+</jats:sup> and LZG:0.3Cr<jats:sup>3+</jats:sup>,0.01Ni<jats:sup>2+</jats:sup> phosphors can reach internal/external quantum efficiency (IQE/EQE) of 94%/64% and 77%/53%, respectively. The electroluminescence property and potential applications in spectroscopic analysis, night-vision, and bioimaging of fabricated NIR-LED with LZG:0.3Cr<jats:sup>3+</jats:sup>,0.01Ni<jats:sup>2+</jats:sup> have also been investigated. In addition, the designed ratiometric optical thermometer responds to wide temperature ranges (100-175 K, 200–475 K) and shows a maximum relative sensitivity value (<jats:italic>S</jats:italic><jats:sub>r</jats:sub>) of 2.4% K<jats:sup>−1</jats:sup> at 475 K. The optical performance of absorption in the red region and emission in the NIR region enables the LZG:0.3Cr<jats:sup>3+</jats:sup>,0.01Ni<jats:sup>2+</jats:sup> to become a candidate for NIR optical thermometers in biotechnological applications.</jats:p>

Журнал: Advanced Optical Materials

Выпуск журнала: Т. 12, № 1

ISSN журнала: 21951071

• Zhang Qianqian (School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 China)
• Li Guogang (Zhejiang Institute China University of Geosciences Hangzhou 311305 China)
• Li Guangzhi (College of Pharmacy Jiamusi University Jiamusi Heilongjiang 154007 P. R. China)
• Liu Dongjie (School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 China)
• Dang Peipei (School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 China)
• Qiu Lei (Faculty of Materials Science and Chemistry China University of Geosciences Wuhan 430074 China)
• Lian Hongzhou (School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 China)
• Molokeev Maxim S. (International Research Center of Spectroscopy and Quantum Chemistry — IRC SQC Siberian Federal University Krasnoyarsk 660041 Russia)
• Lin Jun (School of Applied Chemistry and Engineering University of Science and Technology of China Hefei 230026 China)

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