A Eu 3+ Application of Sr2YTaO6-doped reversible photochromic persistent luminescent material in multimodal optical encryption

Abstract

The application discloses a kind of Eu 3+ The application discloses application of a Sr2YTaO6 reversible photochromic persistent luminescence material in multimodal optical encryption, and belongs to the technical field of luminescent functional materials and optical information security technology.The material is doped with Eu 3+ As an activating ion based on a Sr2YTaO6 matrix to form a rare earth-doped inorganic luminescence system with dual-stimulus response characteristics of reversible photochromism and persistent luminescence.The material can form identifiable, controllable and erasable optical state changes under different stimulus sources, and can realize multi-dimensional information reading by combining luminescence, afterglow and gray color difference, thereby improving the technical level and application value of anti-counterfeiting and encryption.

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