多元钙钛矿材料、厚膜的制备方法及X射线探测器

By controlling the chemical composition and ball milling conditions of multi-component perovskite materials, pure-phase multi-component perovskite powder was prepared, solving the phase separation and segregation problems in the thick film preparation process of multi-component perovskite and improving the performance and stability of X-ray detectors.

CN115188896BActive Publication Date: 2026-07-17EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
EZHOU INST OF IND TECH HUAZHONG UNIV OF SCI & TECH
Filing Date
2022-07-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Multi-component perovskite materials are prone to phase separation and segregation when fabricating thick films for X-ray detectors, which affects device performance.

Method used

By controlling the chemical composition ABX3 of the multi-component perovskite material, a reaction ball mill was carried out using an anti-solvent at a speed of 400–600 rpm for 24–36 hours to obtain pure-phase multi-component perovskite powder. A cubic phase structure was then achieved at room temperature, and a multi-component perovskite thick film was subsequently prepared.

Benefits of technology

This study solved the phase separation and segregation problems in the thick film preparation process of multi-component perovskites, improved the device performance of X-ray detectors, enhanced the stability of materials, and reduced the defect state density.

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Abstract

本发明公开了一种多元钙钛矿材料、厚膜的制备方法及X射线探测器,其中的多元钙钛矿材料的化学组分为ABX3;A为多元阳离子基团,B为二价金属离子,X为卤素阴离子,多元钙钛矿材料的制备方法包括:基于ABX3的化学配比获取原料;在所述原料中加入反溶剂后进行反应球磨,获得反应产物;在进行反应球磨时,控制球磨机转速为400~600rpm,球磨时间为24~36小时;对所述反应产物进行干燥处理,获得多元钙钛矿粉末;上述方法能够制备纯相的多元钙钛矿粉末,避免在制备多元钙钛矿厚膜的过程中产生分相和偏析,提高了X射线探测器的器件性能。
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