Volume 64, Issue 28 e202504327
Research Article

High-Security and High-Efficiency Information Encryption/Decryption Based on 2D Hybrid Organic–Inorganic Perovskites via Delicate Organic-Cation Engineering

Ziang Chen

Ziang Chen

Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026 China

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Dr. Zhoushilin Ruan

Dr. Zhoushilin Ruan

Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026 China

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Dr. Shenlong Jiang

Corresponding Author

Dr. Shenlong Jiang

Hefei National Laboratory, University of Science and Technology of China, Hefei, 230088 China

E-mail: [email protected]; [email protected]; [email protected]

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Prof. Qun Zhang

Corresponding Author

Prof. Qun Zhang

Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026 China

Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026 China

Hefei National Laboratory, University of Science and Technology of China, Hefei, 230088 China

E-mail: [email protected]; [email protected]; [email protected]

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Prof. Yi Luo

Corresponding Author

Prof. Yi Luo

Department of Chemical Physics, University of Science and Technology of China, Hefei, 230026 China

Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026 China

Hefei National Laboratory, University of Science and Technology of China, Hefei, 230088 China

E-mail: [email protected]; [email protected]; [email protected]

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First published: 06 May 2025

Graphical Abstract

We develop a unique strategy of information encryption/decryption based on stimuli-responsive luminescence of 2D hybrid organic–inorganic perovskites via delicate organic-cation engineering. The facile triple-key implementation working in multiple switching modes (featuring high contrast and quick response) allows us to achieve high security and readout efficiency, opening a new door to information security based on optical encryption.

Abstract

Optical encryption based on stimuli-responsive luminescence (SRL) materials has received enormous interest in the field of information security. Metal–halide perovskites, as a newly emerging SRL material, have shown great potential for confidential information encryption/decryption (InfoED) applications. However, it is rather challenging to ensure high security and achieve high readout efficiency in perovskite SRL-based InfoED. Herein, we present a unique InfoED strategy using 2D hybrid organic–inorganic perovskites via delicate organic-cation engineering, benefiting from the high contrast and quick response of their photoluminescence behaviors. Indistinguishably encrypted information can be efficiently decrypted through triple-key implementation (i.e., ultraviolet-light irradiation, temperature control, and narrow-bandpass filtering) that operates in multiple switching modes, enabling us to demonstrate extremely high security by adopting dot-matrix patterning scenarios that are virtually uncrackable. As a proof of principle, a simple 2 × 2 patterning can yield a code dictionary with random variants as high as ∼1047, which will take as long as ∼1022 years to crack using the hitherto fastest supercomputer, El Capitan. Our perovskite SRL-based InfoED strategy provides a promising solution for information security based on optical encryption.

Conflict of Interests

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the Supporting Information of this article.

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