MgF2:Mn2+: novel material with mechanically-induced luminescence

Jingjing Ning; Yuantian Zheng; Yinti Ren; Leipeng Li; Xingqiang Shi; Dengfeng Peng; Yanmin Yang

doi:10.1016/j.scib.2021.12.005

MgF₂:Mn²⁺: novel material with mechanically-induced luminescence

Sci Bull (Beijing). 2022 Apr 15;67(7):707-715. doi: 10.1016/j.scib.2021.12.005. Epub 2021 Dec 10.

Authors

Jingjing Ning¹, Yuantian Zheng², Yinti Ren¹, Leipeng Li³, Xingqiang Shi¹, Dengfeng Peng⁴, Yanmin Yang⁵

Affiliations

¹ Hebei Key Laboratory of Optic-electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China.
² College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China.
³ 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.
⁴ College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China. Electronic address: pengdengfeng@szu.edu.cn.
⁵ 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.

PMID: 36546135
DOI: 10.1016/j.scib.2021.12.005

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, MgF₂:Mn²⁺, 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 MgF₂:Mn²⁺ 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.

Keywords: Long-persistence luminescence; Mechanically induced luminescence; MgF(2):Mn(2+); X-ray.

MeSH terms

Light*
Lighting
Luminescence*
Ultraviolet Rays