两步钝化制备硫化铅短波红外探测器及光电性能表征的综合实验设计#br#

doi:10．14139/j．cnki．cn22-1228．2026．02．008

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摘要硫化铅量子点凭借其带隙可调及溶液加工优势，已成为短波红外探测领域研究热点。但在专业实验教学中，普遍存在前沿性不足、实践环节碎片化等问题。依托课题组在本领域的科研积累，设计了一项从量子点材料制备到器件构筑及成像应用的全流程综合实验。实验引入一种“两步钝化”策略，引导学生对比探究不同配体交换工艺对硫化铅量子点表面缺陷及短波红外探测器光电性能的影响。结果表明，经两步钝化处理的器件在 1 350 nm 处外量子效率超过 40%，并成功实现对不透明胶囊内物体的透视融合成像。该实验将抽象的半导体理论知识与具体器件制备相结合，通过可视化成像应用激发学生探索兴趣，有效提升了学生的工程实践能力和创新思维。

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	韩泽尧
	张丽
	孙斌
	宋春元

关键词: 硫化铅胶体量子点短波红外两步钝化

Abstract: Lead sulfide colloidal quantum dots have emerged as a significant research focus in short-wave
infrared (SWIＲ)detection due to their tunable bandgaps and solution-processing advantages． However，
professional experimental teaching frequently faces challenges such as a lack of cutting-edge content and
fragmented practical training modules．Leveraging the research group＇s established expertise，this paper presents
a comprehensive，full-process experimental project spanning from material synthesis to device architecture and
terminal imaging applications．Central to this design is a two-step passivation strategy，which guides students to
comparatively explore the impact of different ligand exchange processes on surface defects and the resulting
photoelectric performance of SWIＲ detectors． The results demonstrate that the two-step passivated devices
achieve an external quantum efficiency exceeding 40% at 1 350 nm and facilitate successful perspective fusion
imaging of objects concealed within opaque capsules．By bridging abstract semiconductor physics with hands-on
device fabrication，this project utilizes visualized imaging to stimulate student engagement，effectively enhancing
their engineering proficiency and innovative capacity．

Key words: lead sulfide colloidal quantum dots short-wave infrared two-step passivation

发布日期: 2026-04-25

ZTFLH:

TM 914．4-2

基金资助: 南京邮电大学教学改革研究项目(JG03025JX33);中国高等教育学会“2024 年度高等教育科学研究规划课题”
(24SY0216);江苏省基础研究计划自然科学资金(BK20240634);江苏省高等学校基础科学(自然科学)研究面上项目
(24KJB510024)

引用本文:

韩泽尧 , 张丽, 孙斌, 宋春元. 两步钝化制备硫化铅短波红外探测器及光电性能表征的综合实验设计#br#[J]. 大学物理实验, 2026, 39(2): 42-47.
HAN Zeyao , ZHANG Li, SUN Bin, SONG Chunyuan. Comprehensive Experimental Design of PbS Short-wave Infrared Photodetectors via Two-step Passivation and Photoelectric Performance Characterization#br#. Physical Experiment of College, 2026, 39(2): 42-47.

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https://dawushiyan.jlict.edu.cn/CN/10．14139/j．cnki．cn22-1228．2026．02．008 或 https://dawushiyan.jlict.edu.cn/CN/Y2026/V39/I2/42