摘要：A novel self-recoverable mechanoluminescent phosphor Ca_(5)Ga_(6)O_(14)∶Eu^(3+)was developed by the high-tem-perature solid-state reaction method,and its luminescence properties were ***_(5)Ga_(6)O_(14)∶Eu^(3+)can produce red mechanoluminescence,and importantly,it shows good *** mechanoluminescence of Ca_(5)Ga_(6)O_(14)∶Eu^(3+)re-sults from the piezoelectric field generated inside the material under stress,rather than the charge carriers stored in the traps,which can be confirmed by the multiple cycles of mechanoluminescence tests and heat treatment *** mechanoluminescence color can be turned from red to green by co-doping varied concentrations of Tb^(3+),which may be meaningful for encrypted letter *** encryption scheme for secure communication was devised by harness-ing mechanoluminescence patterns in diverse shapes and ASCII codes,which shows good encryption *** results suggest that the mechanoluminescence phosphor Ca_(5)Ga_(6)O_(14)∶Eu^(3+),Tb^(3+)may be applied to the optical infor-mation encryption.

摘要：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 *** 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 ***,current reproducible ML materials are restricted to sulfide-and oxide-based *** addition,most of the reported ML materials require pre-irradiation with ultraviolet(UV)lamps or other light sources,which seriously hinders their practical ***,we report a novel ML material,MgF_(2):Mn^(2+),which emits bright red light under an external dynamic force without the need for pre-charging with UV *** luminescence properties were systematically studied,and the piezophotonic application was *** interestingly,unlike the well-known zinc sulfide ML complexes reported previously,a highly transparent ML film was successfully fabricated by incorporating MgF_(2):Mn^(2+)into polydimethylsiloxane(PDMS)*** film is expected to find applications in advanced flexible optoelectronics such as integrated piezophotonics,artificial skin,athletic analytics in sports.

摘要：A simple self-catalyzed chemical vapor deposition process was conducted to synthesize single-crystalline GaSb nanowires,where Ga droplets were utilized as the *** as-grown GaSb nanowires exhibited typical p-type semiconductor behavior with the calculated hole mobility of about 0.042 cm^2 V^-1 s^-*** photoresponse properties of the GaSb nanowires were studied by fabricating nanowire photodetectors on both rigid and flexible *** results revealed that the photodetectors exhibited broad spectral response ranging from ultraviolet,visible,to near-infrared *** the device on rigid substrate,the corresponding responsivity and the detectivity were calculated to be 3.86×10^3 A W-1 and 3.15×10^13 Jones for 500 nm light,and 7.22×10^2 A W-1 and 5.90×10^12 Jones for 808 nm light,respectively,which were the highest value compared with those of other reported Ga1-xInxAsySb1-y structure ***,the flexible photodetectors not only maintained the comparable good photoresponse properties as the rigid one,but also possessed excellent mechanical flexibility and *** study could facilitate the understanding on the fundamental characteristics of self-catalyzed grown GaSb nanowires and the design of functional nano-optoelectronic devices based on GaSb nanowires.