journal article·2024-05-06

Machine-Learning-Driven Discovery of Mn4+-Doped Red-Emitting Fluorides with Short Excited-State Lifetime and High Efficiency for Mini Light-Emitting Diode Displays

Hong Ming, Yayun Zhou, Maxim S. Molokeev, Chuang Zhang, Lin Huang, Yuanjing Wang, Hong-Tao Sun, Enhai Song, Qinyuan Zhang

ACS Materials Letters· Volume 6· Issue 5
Publisher page

Abstract

The discovery of high-efficiency Mn 4+ -activated fluoride red phosphors with short excited-state lifetimes (ESLs) is urgent and crucial for high-quality, wide-color-gamut display applications. However, it is still a great challenge to design target phosphors with both short ESL and high luminescence efficiency. Herein, we propose an efficient machine learning approach based on a small dataset to establish the ESL prediction model, thereby facilitating the discovery of new Mn 4+ -activated fluorides with short ESLs. Such a model can not only accurately predict the ESLs of Mn 4+ in fluorides but also quantify the impact of structure features on ESLs, therefore elucidating the “structure-lifetime” correlations. Guided by the correlations, two new Mn 4+ -doped tetramethylammonium (TMA)-based hybrid fluorides (TMA) 2 BF 6:Mn 4+ (B = Sn or Hf) with both short ESLs (τ ≤ 3.7 ms) and high quantum efficiencies (internal QEs > 92%, external QEs > 55%) have been discovered successfully. A prototype displayer with excellent performance (∼124% National Television Standards Committee (NTSC) color gamut) is assembled by employing a (TMA) 2 SnF 6:Mn 4+ -based white Mini-LED backlight module, demonstrating its practical prospects in high-quality displays. This work not only brings promising candidates for Mn 4+ -doped fluoride phosphors but also provides a valuable reference for accelerating the discovery of new promising phosphors.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Luminescence Properties of Advanced Materials · Inorganic Fluorides and Related Compounds · Ga2O3 and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, and Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices, South China University of Technology, Guangzhou 510641, China

School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641, China

International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan

Guangdong-Hong Kong-Macao Joint Laboratory for Intelligent Micro-Nano Optoelectronic Technology, School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528225, China

Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk 660036, Russia

Laboratory of Theory and Optimization of Chemical and Technological Processes, University of Tyumen, Tyumen 625003, Russia

Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk 660041, Russia

School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510641, China

Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials and College of Materials, Xiamen University, Xiamen 361005, China

Funding

National Key Research and Development Program of China · Tyumen region · China Scholarship Council · National Natural Science Foundation of China · Natural Science Foundation of Guangdong Province · Distinguished Youth Foundation of Guangdong Scientific Committee

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