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金属卤化物钙钛矿具有优异的光电特性，然而，通过溶液技术制备钙钛矿光电探测器仍存在工艺繁琐且耗时的问题。通过快速一步液相沉积法，在叉指金电极上直接合成大尺寸的CsPbBr3微米片，并构建了基于单晶钙钛矿的光电探测器。所合成的CsPbBr3微米片具有光滑的表面、优异的结晶性以及极低的缺陷密度(4.58×1011 cm-3)。得益于这些优势，该CsPbBr3微米片光电探测器在447 nm波长光照下综合性能优异，显示出1.72 A/W的高响应度、8.2×1011 Jones的大比探测率和超快的响应速度(上升/下降时间为95.7μs/73.6μs)。本研究为高质量CsPbBr3的制备及其高性能光电器件的集成提供了简单、快速的途径。
Abstract：Perovskite metal halides exhibit excellent optoelectronic properties. However, the preparation of perovskite-based photodetectors by the solution techniques is still suffering from complex and time-consuming process. A single crystal perovskite-based photodetector was constructed by fast one-step liquid-phase deposition of synthesizing large-sized CsPbBr3 microplates(MPs) on the interdigitated gold electrodes directly. The as-synthesized CsPbBr3 MPs exhibit smooth surface, excellent crystallinity and an ultralow defect density of 4.58×1011 cm-3. Benefiting from these advantages, the CsPbBr3 MP photodetector demonstrates superior comprehensive performance with a high responsivity of 1.72 A/W, a large specific detectivity of 8.2×1011 Jones and an ultrafast response speed(rise/fall time of 95.7 μs/73.6 μs) under 447 nm wavelength light illumination. This work provides a simple and fast pathway for the preparation of high-quality CsPbBr3 and the integration of high-performance perovskite optoelectronic devices.
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基本信息:
DOI：10.13290/j.cnki.bdtjs.2026.01.004
中图分类号:TN36
引用信息:
[1]苏志城,云文磊,黄子林,等.快速一步液相沉积法制备的高性能单晶CsPbBr_3光电探测器[J].半导体技术,2026,51(01):30-36.DOI:10.13290/j.cnki.bdtjs.2026.01.004.
基金信息:
国家自然科学基金(62364003); 江西省自然科学基金(20224BAB202035); 东南大学量子材料与信息器件教育部重点实验室开放研究基金
2025-11-14
2025-11-14
2025-11-14