Femtosecond laser preparation method of lead halide perovskite micro laser

CN120855083APending Publication Date: 2025-10-28SANYA SCI & EDUCATION INNOVATION PARK WUHAN UNIV OF TECH
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Patent Information

Application Number
CN202510880746.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-27
Publication Date
2025-10-28

AI Technical Summary

Technical Problem

In existing technologies, the structural design of perovskite microlasers lacks precision, resulting in low processing efficiency and unsatisfactory results, making it difficult to meet specific application requirements.

Method used

Using simulation calculation combined with femtosecond laser direct writing processing, lead halide perovskite films were prepared by spin coating and annealing. The refractive index and extinction coefficient were fitted using MATLAB software to accurately design the structural parameters of the microlaser.

Benefits of technology

The efficient preparation of lead halide titanium ore microlasers was achieved, which reduced experimental costs and improved processing efficiency and laser performance. In particular, the comprehensive level of lead iodide titanium ore microlasers reached the best, with the highest intensity, and significantly improved luminous efficiency and color purity.

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Abstract

The invention belongs to the technical field of micro lasers, and discloses a femtosecond laser preparation method of a lead halide perovskite micro laser. The preparation method comprises the following steps: S1, pretreating a substrate; s2, preparing a titanium dioxide film; s3, preparing a lead halide perovskite thin film on the titanium dioxide thin film; s4, additionally preparing a single-layer titanium dioxide thin film and a single-layer lead halide perovskite thin film; s5, respectively testing the titanium dioxide thin film, the lead halide perovskite thin film and the substrate obtained in the step S4 to obtain refractive indexes and extinction coefficients of the titanium dioxide thin film, the lead halide perovskite thin film and the substrate, and carrying out analog calculation by using MATLAB software to obtain processing size requirement data; and S6, according to the size requirement data obtained in the S5, machining is conducted through a femtosecond laser direct writing machining method. The processing size requirement data is obtained through analog calculation, and the structure of the lead halide perovskite micro laser can be accurately designed and optimized, so that the experiment cost is reduced, and the processing efficiency and the laser performance are improved.
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