MgF:Mn: novel material with mechanically-induced luminescence.

Journal: Science bulletin
PMID: 36546135

Abstract

Mechanoluminescent (ML) materials can directly convert external mechanical stimulation into light without the need for excitation from other forms of energy, such as light or electricity. This alluring characteristic makes ML materials potentially applicable in a wide range of areas, including dynamic imaging of force, advanced displays, information code, storage, and anti-counterfeiting encryption. However, current reproducible ML materials are restricted to sulfide- and oxide-based materials. In addition, most of the reported ML materials require pre-irradiation with ultraviolet (UV) lamps or other light sources, which seriously hinders their practical applications. Here, we report a novel ML material, MgF:Mn, which emits bright red light under an external dynamic force without the need for pre-charging with UV light. The luminescence properties were systematically studied, and the piezophotonic application was demonstrated. More interestingly, unlike the well-known zinc sulfide ML complexes reported previously, a highly transparent ML film was successfully fabricated by incorporating MgF:Mn into polydimethylsiloxane (PDMS) matrices. This film is expected to find applications in advanced flexible optoelectronics such as integrated piezophotonics, artificial skin, athletic analytics in sports science, among others.

Authors

  • Jingjing Ning
    Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China.
  • Yuantian Zheng
    College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
  • Yinti Ren
    Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China.
  • Leipeng Li
    Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China. Electronic address: lpl@hbu.edu.cn.
  • Xingqiang Shi
    Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China.
  • Dengfeng Peng
    College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China. Electronic address: pengdengfeng@szu.edu.cn.
  • Yanmin Yang
    Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China. Electronic address: yangym@hbu.edu.cn.

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