2D Ruddlesden-Popper Perovskites/PVDF-TrFE Photodetector for Anti-Interference Vision System Derived from Ferroelectric Polarization Modulation

作     者：Zhang, Xinglong Hong, Enliu Tan, Xiaojun Liu, Jie Jiang, Anquan Fang, Xiaosheng 

作者机构：Fudan Univ Dept Mat Sci State Key Lab Mol Engn Polymers Shanghai 200433 Peoples R China Shaoxin Lab Shaoxing 312000 Peoples R China Fudan Univ Sch Microelect State Key Lab ASIC&System Shanghai 200433 Peoples R China 

出 版 物：《ADVANCED FUNCTIONAL MATERIALS》 (Adv. Funct. Mater.)

年 卷 期：2025年第35卷第20期

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0702[理学-物理学] 

基　　金：National Key R&D Program of China National Natural Science Foundation of China [62374035, 92263106, 52425308] 2022YFA1402904 

主　　题：2D Ruddlesden-Popper perovskites ferroelectric photodetector PVDF-TrFE single-crystal 

摘      要：2D Ruddlesden-Popper (RP) perovskites have garnered increasing attention for their excellent photoresponse, characterized by high carrier mobility, tunable bandgaps, high optical absorption, and molecular asymmetry. Herein, centimeter scale single crystal 2D hybrid perovskites, BA2PbBr4 (BPB) is synthesized, using quasi-static cooling method and composited with ferroelectric PVDF-TrFE(PT) film to construct a multi-field coupling photodetector (PD) via van der Waals force contact. Ferroelectric tests show that the PT film exhibits a saturated polarization strength of 3.6 mu C cm-2, allowing the ferroelectric localized field to modulate the band structure of PT and enhance the photocurrent. The Heterojunction systems exhibit ultra-high responsivity (15.3 A W-1) and detectivity (1.99 x 1013 Jones) under 390 nm illumination at 3 V bias, with a performance improvement of over 102 times compared to BPB PDs. Furthermore, the hybrid PDs exhibit highly stable I-t curve with a photocurrent retention rate of 97.4%. Leveraging this feature, a large-area imaging device is designed at the centimeter level scale, enabling multifunctional vision applications accurate letter imaging process and anti-interference number detection. The work presents a valuable insight in design of future autonomous driving vision systems.