Библиографическое описание:Highly Efficient Mn4+-Doped Red-Emitting Oxyfluorides with Excellent Water Resistance Toward Flexible Composite Fluorescent Optical Fiber Sensor : научное издание / M. Liu [et al.]. - Текст : непосредственный // Laser & Photonics Reviews. - 2025. - №. - P. e01813. - ISSN 1863-8880. - ISSN 1863-8899, DOI 10.1002/lpor.202501813.
Аннотация:<jats:title>Abstract</jats:title><jats:p>Flexible thermal sensors are crucial for monitoring the important thermodynamic parameter of temperature in daily life, industrial production, and scientific research. However, significant challenges remain in simultaneously achieving reproducible, sensitive, real-time, and in situ temperature sensing capabilities. Herein, a Mn<jats:sup>4+</jats:sup> mono-doped CsNaNbOF<jats:sub>5</jats:sub>:Mn<jats:sup>4+</jats:sup> (CNNOFM) phosphor is designed and synthesized as a dual-mode optical thermometric material, showing high luminescence efficiencies and excellent temperature-dependent behaviors. Combined density functional theory calculations and experimental characterization reveal the isovalent group substitution mechanism between [MnF<jats:sub>6</jats:sub>]<jats:sup>2−</jats:sup> and [NbOF<jats:sub>5</jats:sub>]<jats:sup>2−</jats:sup> octahedrons, eliminating charge compensation defects in the CNNOFM system and thereby leading to enhanced luminescence efficiencies. Furthermore, CNNOFM exhibits remarkable water resistance, retaining 88.12% of its luminescent efficiency after 4 h of water immersion. The CNNOFM demonstrates high relative sensitivity in both fluorescence intensity ratio and lifetime modes, with S<jats:sub>r</jats:sub> values of 0.37% K<jats:sup>−1</jats:sup> and 5.8% K<jats:sup>−1</jats:sup> at 440 K, respectively. Finally, a flexible composite fluorescent fiber temperature sensor is fabricated based on the CNNOFM phosphor to monitor the temperature of an ice-water mixture, exhibiting satisfactory performance. This work not only provides a promising thermally sensitive material for optical thermometry but also offers a new pathway for the development of flexible optical temperature sensors.</jats:p>
Держатель оригинала документа:College of Rare Earths Jiangxi University of Science and Technology Ganzhou 341000 P. R. China, Guorui Kechuang Rare Earth Functional Materials (Ganzhou) Co. Ltd. (National Rare Earth Functional Materials Manufacturing Innovation Centre) Ganzhou 341000 P. R. China, International Research Center of Spectroscopy and Quantum Chemistry-IRC SQC Siberian Federal University Krasnoyarsk 660041 Russia, Key Laboratory of Testing and Tracing of Rare Earth Products State Administration for Market Regulation Ganzhou 341000 P. R. China, Laboratory of Crystal Physics Kirensky Institute of Physics Federal Research Center KSC SB RAS Krasnoyarsk 660036 Russia, School of Physics and Optoelectronics South China University of Technology Guangdong Guangzhou 510641 P. R. China, State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices South China University of Technology Guangdong Guangzhou 510641 P. R. China
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