All-photon cryptographic primitive preparation method based on high-throughput perovskite micro-single crystal array

Abstract

The invention relates to the technical field of perovskite single-crystal photoelectric devices, in particular to an all-photon cryptographic primitive preparation method based on a high-flux perovskite micro-single-crystal array. The method comprises the following steps of: regulating and controlling the atmosphere of a high-flux micro-droplet evaporation recrystallization solvent to control the environment humidity and the temperature of a hot plate; and by means of a solution method, successfully achieving one-step evaporation self-assembly on a patterned array substrate, so as to efficiently prepare the shape-controllable high-flux perovskite nanorod single crystal array. Laser emission information and characteristics of the crystal array are collected and successfully applied to establishment of the all-photon cryptographic primitive PUF, and encryption and decryption of encrypted transmission information are achieved. The excellent chemical/structural stability of the high-flux all-inorganic perovskite single crystal dot matrix provides innate advantages for stable formation and reading of the password primitive, the preparation method is simple, the operation is flexible, and the high-flux perovskite single crystal array is certainly promoted to enter a new step in the application of the all-photon password primitive.

Description

technical field [0001] The invention relates to the technical field of perovskite single-crystal optoelectronic devices, in particular to a method for preparing all-photon cipher primitives based on high-throughput perovskite micro-single-crystal arrays. Background technique [0002] With the rapid development of computer science, the security strength of information encryption technology relying on traditional algorithms has been greatly weakened, and there is an urgent need for the continuous upgrading and updating of information encryption technology. In recent years, in order to achieve a higher level of hardware or information security, physical unclonable functions (PUFs) based on random physical patterns in nature have been frequently used in anti-counterfeiting due to their high complexity and unique non-reproducibility. And encryption technology, some problems and challenges are becoming more and more prominent, the main contradiction lies in the balance between sys...

AI Technical Summary

Problems solved by technology

Many naturally randomly generated non-arrayed random patterns, such as polymer wrinkles, speckled patterns, and randomly distributed silver nanowires or nanoparticles, have poor alignment uniformity due to the low controllability of their preparation steps. The process of digitizing into a bit sequence is extremely cumbersome; the electronic PUF based on silicon integration technology has high complexity, but is sensitive to environmental changes (such as temperature), and the design of multi-layer circuit structure is relatively complicated

[0003] Perovskite single crystal is an excellent optoelectronic material with resonant cavity size-dependent laser emission characteristics. The known all-inorganic perovskite CsPbX3, especially CsPbBr3, has significant advantages in thermal stability and water stability, but also There are some defects: when no additional reagents are added, the isotropic growth process of CsPbX3 crystals determines that its morphology is less controllable

However, such methods usually need to make fine templates, lack strong flexibility, or the steps are cumbersome, and there are many control conditions that need to be paid attention to, and the fully controllable preparation process has poor adaptability to PUF applications.

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