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综合化学实验设计：无铅卤化物钙钛矿薄膜的制备及光电探测性能研究

王旭东, 房俞创, 魏维, 余斌源, 余静怡, 陈洪燕   

  1. 中山大学化学学院, 广东 广州 510006
  • 收稿日期:2026-03-13 修回日期:2026-05-12
  • 通讯作者: 陈洪燕, 王旭东 E-mail:chenhy33@mail.sysu.edu.cn;wangxd26@mail.sysu.edu.cn Hong-Yan Chen, Xu-Dong Wang
  • 基金资助:
    国家自然科学基金(22471302)；广东省基础与应用基础研究基金项目(2024B1515020101)；广东省本科高校教学质量与教学改革工程项目

Fabrication and photodetector performance of lead-free halide perovskite thin films: a comprehensive chemical experiment design

Xu-Dong Wang, Yu-Chuang Fang, Wei Wei, Bin-Yuan Yu, Jing-Yi Yu, Hong-Yan Chen   

  1. School of Chemistry, Sun Yat-Sen University, Guangzhou 510006, Guangdong Province, China
  • Received:2026-03-13 Revised:2026-05-12
  • Contact: Hong-Yan Chen, Xu-Dong Wang E-mail:chenhy33@mail.sysu.edu.cn;wangxd26@mail.sysu.edu.cn

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摘要： 光电探测是一项面向国家战略需求的关键技术，在国防、医学、工业等领域具有重大的应用价值。无铅卤化物钙钛矿作为一类新兴的半导体材料，具有光电性能优异、合成工艺简单、价格低廉、毒性低等优点，在光电探测领域具有很好的商业化发展潜力。本实验践行以科促教，将无铅卤化物钙钛矿光电探测这一科研前沿转化为综合化学实验。实验以无铅钙钛矿(3-AMP)BiI5为研究对象，通过优化薄膜质量及钝化表界面缺陷来改善光吸收、促进电荷传输及抑制载流子复合，制备高性能光电探测器并探究其成像应用。实验内容涵盖材料合成、性能表征与应用探究，其操作容易、趣味性强、知识点丰富。两年的课堂实践教学表明，本实验可行性好，兼具基础性、进阶性和挑战性，适合不同阶段本科生的实验教学。

关键词: 光电探测器, 卤化物钙钛矿, 无铅, 薄膜, 成像

Abstract: Photoelectric detection is a critical technology aligned with national strategic priorities, demonstrating significant application value in defense, medicine, and industry. Lead-free halide perovskites, as an emerging class of semiconductor materials, exhibit outstanding optoelectronic properties, simple synthesis processes, low cost, and minimal toxicity, making them highly promising for commercialization in photodetection. This study integrates frontier materials research into a comprehensive chemistry experiment by focusing on the lead-free perovskite (3-AMP)BiI5. The experiment involves optimizing thinfilm quality and passivating surface defects to enhance light absorption, improve charge transport, and suppress carrier recombination, thereby enabling the fabrication of high-performance photodetectors and exploring their imaging applications. The experimental procedure encompasses material synthesis, performance characterization, and application investigation, offering straightforward operation, engaging content, and rich educational value. Two years of classroom implementation confirm the experiment’s feasibility, adaptability, and suitability for undergraduate teaching across different proficiency levels.

Key words: Photoelectric detector, Halide perovskite, Lead free, Thin film, Imaging