biostudies-literatureWang JUniversity of Science and Technology of ChinaShanghai Municipal Science and Technology Major ProjectScience and Technology Commission of Shanghai MunicipalityNatural Science Foundation of Zhejiang ProvinceShanghai Science and Technology CommitteeExcellent Postdoctoral Research Projects of Zhejiang ProvinceYouth Innovation Promotion Association of Chinese Academy of SciencesStrategic Priority Research Program of Chinese Academy of SciencesNational Natural Science Foundation of ChinaNational Key Research and Development Program of ChinaYouth Innovation Promotion Association of the Chinese Academy of Sciencese2205813https://www.ebi.ac.uk/biostudies/studies/S-EPMC10104633biostudies-literatureUnknown10(11)Owing to the large built-in field for efficient charge separation, heterostructures facilitate the simultaneous realization of a low dark current and high photocurrent. The lack of an efficient approach to engineer the depletion region formed across the interfaces of heterojunctions owing to doping differences hinders the realization of high-performance van der Waals (vdW) photodetectors. This study proposes a ferroelectric-controlling van der Waals photodetector with vertically stacked two-dimensional (2D) black phosphorus (BP)/indium selenide (In₂ Se₃ ) to realize high-sensitivity photodetection. The depletion region can be reconstructed by tuning the polarization states generated from the ferroelectric In₂ Se₃ layers. Further, the energy bandsAdvanced science (Weinheim, Baden-Wurttemberg, Germany)Selective Enhancement of Photoresponse with Ferroelectric-Controlled BP/In₂ Se₃ vdW Heterojunction.PMC101046336200524962222514LR22F050004XDB430102002021YFB280070020JC1416000Y202107061991440ZJ202101922JC14029002019SHZDZX019185020862204249LQ20F0500052018YFA0306200Li GChen JYu FZhang LZhang SWang JZhao ZCheng YWang LLi XLiu CChen XTang WfalseSelective Enhancement of Photoresponse with Ferroelectric-Controlled BP/In₂ Se₃ vdW Heterojunction.Owing to the large built-in field for efficient charge separation, heterostructures facilitate the simultaneous realization of a low dark current and high photocurrent. The lack of an efficient approach to engineer the depletion region formed across the interfaces of heterojunctions owing to doping differences hinders the realization of high-performance van der Waals (vdW) photodetectors. This study proposes a ferroelectric-controlling van der Waals photodetector with vertically stacked two-dimensional (2D) black phosphorus (BP)/indium selenide (In₂ Se₃ ) to realize high-sensitivity photodetection. The depletion region can be reconstructed by tuning the polarization states generated from the ferroelectric In₂ Se₃ layers. Further, the energy bands2023-01-01T00:00:00Z2023 Apr2025-04-04T12:43:52.859Z2025-04-04T12:43:52.859ZS-EPMC101046333678209710.1002/advs.202205813