Ion Exchange-Enabled High-Speed Self-Power Photodetector Arrays Based on Large-Scale Monocrystalline Perovskite Films

IF 4.7 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

ACS Applied Electronic Materials Pub Date : 2025-09-18 DOI:10.1021/acsaelm.5c01526

Jiangquan Kuang, , , Xiangyu Guo, , , Qi Han, , , Xingli Zou*, , , Xionggang Lu, , , Xuefeng Wu, , , Qingqing Sun, , , David W. Zhang, , , Shen Hu*, , and , Li Ji*,

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Abstract

Cesium lead halide perovskites exhibit valuable electrical and optical properties and have potential applications in photodetectors. In this study, large-area monocrystalline CsPbBr₃ films were grown via chemical vapor deposition and subsequently transformed into CsPb(Br_0.5I_0.5)₃ thin films via ion exchange. The results demonstrate that the substrate temperature and precursor reaction completeness significantly affect the growth of monocrystalline CsPbBr₃ films. Furthermore, large-area self-powered CsPb(Br_0.5I_0.5)₃ photodetectors with a high switch ratio (>10³) and fast response speed (108 μs/105 μs) were developed. Additionally, a CsPb(Br_0.5I_0.5)₃ image sensor array capable of high-resolution pattern identification was fabricated. This work represents a substantial step toward synthesizing large-area, high-quality monocrystalline CsPbBr₃ and ion exchange films for potential optoelectronics applications.

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基于大规模单晶钙钛矿薄膜的离子交换高速自功率光电探测器阵列

铯-卤化铅钙钛矿具有良好的电学和光学性能，在光电探测器中具有潜在的应用前景。本研究采用化学气相沉积法生长大面积单晶CsPbBr3薄膜，并通过离子交换转化为CsPb(Br0.5I0.5)3薄膜。结果表明，衬底温度和前驱体反应的完整性对单晶CsPbBr3薄膜的生长有显著影响。此外，还研制出了具有高开关比（>103）和快速响应速度（108 μs/105 μs）的大面积自供电CsPb(Br0.5I0.5)3光电探测器。此外，制备了具有高分辨率模式识别能力的CsPb(Br0.5I0.5)3图像传感器阵列。这项工作代表了合成大面积，高质量单晶CsPbBr3和离子交换膜的重要一步，用于潜在的光电子应用。

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来源期刊

ACS Applied Electronic Materials Multiple-

CiteScore

7.20

自引率

4.30%

发文量

567

期刊介绍： ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/Abstracted： Web of Science SCIE Scopus CAS INSPEC Portico