Boosting Mechanoluminescence Performance in Doped CaZnOS by the Facile Self‐Reduction Approach
Abstract
Abstract Mechanoluminescence (ML), the emission of light under mechanical stimuli, shows great potential in passive sensing, wearable devices, and biomedical diagnostics. However, the practical application of ML materials is hindered by low intensity and poor self‐recoverable performance. Herein, a Mn 4+ →Mn 2+ self‐reduction strategy is presented to significantly enhance the self‐recoverable ML performance of CaZnOS by inducing lattice defects and promoting distortion in its noncentrosymmetric hexagonal structure. This approach enhances the internal piezoelectric response and increases the maximum ML intensity up to 4 times. X‐ray absorption near‐edge structure, extended X‐ray absorption fine structure, electron paramagnetic resonance, piezoresponse force microscopy, and density functional theory calculations reveal that the composite defects involving and are the key to the significant enhancement of ML. Furthermore, this strategy is successfully extended to rare‐earth ions codoped systems, achieving a general enhancement of near‐infrared ML emission. Based on these findings, a multilayer orthodontic sensor is developed, capable of real‐time occlusal mapping and bite‐force monitoring. The device exhibits sensitive response across 0–12 N and achieves 96.89% accuracy in occlusal localization through neuromorphic image recognition. This work offers a generalizable route toward ML performance optimization and paves the way for the development of advanced intelligent sensing technologies.
Article Details
Authors (12)
Shengbin Xu
State Key Laboratory of Luminescent Materials and Devices Institute of Optical Communication Materials Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques South China University of Technology Guangzhou 510640 China
Yao Xiao
School of Chemistry and Chemical Engineering
Puxian Xiong
Pan Zheng
Key Laboratory of Superlight Materials & Surface Technology of Ministry of Education, College of Material Sciences and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China
Sheng Wu
Xuesong Wang
College of Transportation
Yumin Yin
State Key Laboratory of Luminescent Materials and Devices Institute of Optical Communication Materials Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques South China University of Technology Guangzhou 510640 China
Haiqiang Fang
State Key Laboratory of Luminescent Materials and Devices Institute of Optical Communication Materials Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques South China University of Technology Guangzhou 510640 China
Chengan Wang
State Key Laboratory of Luminescent Materials and Devices Institute of Optical Communication Materials Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques South China University of Technology Guangzhou 510640 China
Yuexi Lu
State Key Laboratory of Luminescent Materials and Devices Institute of Optical Communication Materials Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques South China University of Technology Guangzhou 510640 China
Enhai Song
State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou China
Jiulin Gan
State Key Laboratory of Luminescent Materials and Devices School of Materials Science and Engineering South China University of Technology Guangzhou China