Achieving dynamic quintuple-mode luminescence in Ca3Ti2O7:Pr3+,Er3+ phosphor for anti-counterfeiting applications

In this work, we have synthesized Ca 3 Ti 2 O7:Pr 3+ , Er 3+ phosphors with PL, LPL, PSL, UCL, and ML phenomena. Based on the skillful cooperation of PSL and UCL, dynamic anti-counterfeiting technology has been realized by modulating the 980 nm laser.