Тип публикации: статья из журнала

Год издания: 2024

Идентификатор DOI: 10.1002/adfm.202313490

Аннотация: <jats:title>Abstract</jats:title><jats:p>Mn<jats:sup>4+</jats:sup>-activated fluorides with a saturated red color and sharp line emission are ideal for applications in the light-emitting diodes (LEDs) backlight for displays. However, the emissions attributed to <jats:sup>2</jats:sup>E→<jats:sup>4</jats:sup>A<jats:sub>2</jats:sub> pПоказать полностьюarity and spin-forbidden transitions limit the design and adjustments of emission wavelength and chromaticity coordinates. Herein, machine learning algorithms are used to build a wavelength-prediction model for Mn<jats:sup>4+</jats:sup>-activated fluorides. The model precisely identifies the key structural features that affect wavelengths and discovers target materials. The predicted candidate Cs<jats:sub>2</jats:sub>NaAlF<jats:sub>6</jats:sub>:Mn<jats:sup>4+</jats:sup> (CNAF) with a long-wavelength zero-phonon-line emission at 628 nm exhibits a redshift in comparison with other reported Mn<jats:sup>4+</jats:sup>-activated fluorides and commercial K<jats:sub>2</jats:sub>SiF<jats:sub>6</jats:sub>:Mn<jats:sup>4+</jats:sup>, but maintains narrow spectral emission with full-width half maximum (FWHM) of 11.2 nm. The redshift and narrow spectra result in a color purity of 99.7% and Commission Internationale de L'Eclairage (CIE) chromaticity coordinate of (0.7032,0.2967) that is close to the pure red-light point of Recommendation BT. 2020 (Rec. 2020). Moreover, CNAF is prepared as a transparent red-light film, and the device fabricated using the blue-light mini-LEDs, green quantum-dot film, and CNAF film exhibits a wide color-gamut of 121.5% National Television Standards Committee (NTSC) or 90.6% Rec. 2020, suggesting that CNAF has potential for wide-color-gamut displays.</jats:p>

Журнал: Advanced Functional Materials

Выпуск журнала: Т. 34, № 14

ISSN журнала: 1616301X

Место издания: Weinheim

Издатель: Wiley Interscience

• Wang Yuanjing (State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques School of Materials Science and Engineering South China University of Technology Guangzhou 510641 P. R. China)
• Tang Wenyu (State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques School of Materials Science and Engineering South China University of Technology Guangzhou 510641 P. R. China)
• Zhang Chuang (State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques School of Materials Science and Engineering South China University of Technology Guangzhou 510641 P. R. China)
• Molokeev Maxim S. (Laboratory of Theory and Optimization of Chemical and Technological Processes University of Tyumen Tyumen 625003 Russia)
• Ming Hong (State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques School of Materials Science and Engineering South China University of Technology Guangzhou 510641 P. R. China)
• Zhou Yayun (Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology School of Physics and Optoelectronic Engineering Foshan University Foshan 528225 China)
• Peng Shuai (School of Physics and Optoelectronics South China University of Technology Guangzhou 510641 P. R. China)
• Song Enhai (State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques School of Materials Science and Engineering South China University of Technology Guangzhou 510641 P. R. China)
• Zhang Qinyuan (State Key Laboratory of Luminescent Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques School of Materials Science and Engineering South China University of Technology Guangzhou 510641 P. R. China)

• Ядро РИНЦ (eLIBRARY.RU)