基于Eu/Tb双模发光特性及光学信息加密与识别OA

With the booming global market economy and continuous advancement of science and technology,estab-lishing an efficient anti-counterfeiting technology system to tackle the increasingly rampant counterfeiting and shoddy goods has become a key research focus in materials science and information security.Traditional single-mode optical encryption,which typically produces monochromatic luminescence under a single excitation mode,suffers from limi-tations such as susceptibility to replication.In contrast,optical information encryption represents a critical technolog-ical pathway for achieving advanced anti-counterfeiting capabilities,multi-mode optical encryption,leveraging multi-band light emission characteristics,offers an innovative pathway for anti-counterfeiting applications with high securi-ty,concealment,and reliability.In this work,BaSi2O5∶Eu3+,Tb3+crystals were successfully synthesized via a high-temperature solid-state method.Their optical and structural properties were systematically investigated using charac-terization techniques such as photoluminescence(PL)spectroscopy,X-ray diffraction(XRD),and scanning elec-tron microscopy(SEM).XRD analysis confirmed the successful synthesis of the material.Furthermore,the lumines-cent properties were explored through spectral characterization.Finally,the material was applied in the field of anti-counterfeiting utilizing binary encoding.The results indicate that the designed phosphors exhibit strong orange-yellow and vermilion emission under 377 nm and 395 nm excitation,respectively,meeting the performance requirements for multi-mode optical encryption.Additionally,a novel dual-mode excitation scanning device,employing light-emitting diodes with excitation wavelengths of 377 nm and 395 nm,was designed.This device enables efficient dual-mode op-tical anti-counterfeiting functionality,providing a new technical solution and theoretical foundation for the advance-ment of anti-counterfeiting technologies.