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 char-acteristic 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,cur-rent 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 previ-ously,a highly transparent ML film was successfully fabricated by incorporating MgF2:Mn2+into poly-dimethylsiloxane(PDMS)matrices.This film is expected to find applications in advanced flexible optoelectronics such as integrated piezophotonics,artificial skin,athletic analytics in sports.

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

Hebei Key Laboratory of Optic-electronic Information and Materials,College of Physics Science and Technology,Hebei University,Baoding 071002,China;College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 518060,China

科学通报（英文版）

[1]Jingjing Ning;Yuantian Zheng;Yinti Ren;Leipeng Li;Xingqiang Shi;Dengfeng Peng;Yanmin Yang-.MgF2∶Mn2+:novel material with mechanically-induced luminescence)[J].科学通报（英文版）,2022(07):707-715

Mechanoluminescent,piezophotonic,Mn2+into,piezophotonics

MgF2,novel,mechanically,induced,luminescence,ML,materials,can,directly,convert,external,stimulation,light,without,need,excitation,from,other,forms,energy,such,electricity,This,alluring,acteristic,makes,potentially,applicable,wide,range,areas,including,dynamic,imaging,force,advanced,displays,information,code,storage,anti,counterfeiting,encryption,However,cur,reproducible,restricted,sulfide,oxide,In,addition,most,reported,require,irradiation,ultraviolet,UV,lamps,sources,which,seriously,hinders,their,practical,applications,Here,emits,bright,red,under,charging,properties,were,systematically,studied,was,demonstrated,More,interestingly,unlike,well,known,zinc,complexes,previ,highly,transparent,film,successfully,fabricated,by,incorporating,poly,dimethylsiloxane,PDMS,matrices,expected,find,flexible,optoelectronics,integrated,artificial,skin,athletic,analytics,sports

0.61467