Encryption and anti-counterfeiting technology are important contents in the field of information security. The traditional luminescent anti-counterfeiting technology uses ultraviolet light to excite and convert luminescence, which is easily counterfeited. In this work, Ca5Ga6O14:Pr3+ was prepared, which has three luminescence modes: Photoluminescence, long persistent luminescence, and mechanoluminescence, when co-doped Yb3+ and Er3+ in Ca5Ga6O14:Pr3+, the Up-conversion luminescence and the near-infrared mechanoluminescence were introduced, so that its optical anti-counterfeiting ability was further improved. Based on the various luminescent modes of phosphor mentioned above, a multi-mode anti-counterfeiting model has been designed. The results show that this phosphor has great potential for optical anti-counterfeiting application, and also provides ideas for the future optical anti-counterfeiting research.

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