Stable b‐AsP/InSe Mid‐Infrared Detector with High Polarization‐Sensitivity for Target Feature Discrimination
Abstract The development of next‐generation polarized mid‐infrared imaging systems demands miniaturization, high polarization ratio, room‐temperature operation and atmospheric stability. Compared to bulk materials, 2D anisotropic materials provide a new route for realizing miniaturized polarized photodetectors. However, their infrared sensing capabilities, particularly for detecting weak infrared thermal radiation, are limited by low polarization extinction ratio (PER), narrow spectra response and short‐term stability. Here a blackbody‐ and polarization‐sensitive infrared detector based on moderated arsenic doped black phosphorus (b‐As 0.7 P 0.3 ) and indium selenide (InSe) heterostructure is proposed to improving these issues. The device achieves high infrared polarization detection performance with a PER of 244, broad spectra with cut‐off wavelength of 4.42 µm and exhibits moderate stability without obvious degradation. Benefiting from these excellent performances, sensitive non‐dispersive infrared multi‐gas detection and high‐contrast weak target thermal radiation imaging are demonstrated. This work provides a new way for developing next‐generation stable polarized mid‐infrared detectors operating at room temperature.
Authors
- Weida Hu (ORCID: https://orcid.org/0000-0001-5278-8969)
- Long Zhang (ORCID: https://orcid.org/0000-0002-1944-0474)
- Jiachang Chen (ORCID: https://orcid.org/0000-0002-7488-1707)
- Haitao Wu (ORCID: https://orcid.org/0009-0003-1569-9096)
- Shikun Duan
- Jialin Li (ORCID: https://orcid.org/0000-0003-3300-6268)
- Tengfei Xu (ORCID: https://orcid.org/0000-0002-3212-568X)
- Hailu Wang (ORCID: https://orcid.org/0000-0002-6771-7677)
- Fang Zhong (ORCID: https://orcid.org/0000-0002-5850-4960)
- Songsong Zhang (ORCID: https://orcid.org/0000-0001-5598-7891)
- Xun Ge (ORCID: https://orcid.org/0000-0003-2883-9716)
- Kai Zhang (ORCID: https://orcid.org/0000-0003-0334-6616)
- Jiang Wang
- Qing Li (ORCID: https://orcid.org/0000-0003-2019-3156)
- Cheng Chen (ORCID: https://orcid.org/0009-0006-9334-9106)
- Ting He (ORCID: https://orcid.org/0000-0002-6653-6356)
- Ning Li (ORCID: https://orcid.org/0000-0003-1025-9641)
- Linjun Li (ORCID: https://orcid.org/0000-0002-2734-0414)
- Wei Lu (ORCID: https://orcid.org/0000-0001-6614-8727)
- Xiangbao Xu
- Dezheng Guo
Institutions
- Chinese Academy of Sciences (CN)
- Nantong University (CN)
- Nanjing University of Science and Technology (CN)
- Suzhou Institute of Nano-tech and Nano-bionics (CN)
- Shanghai Institute of Technical Physics (CN)
- University of Chinese Academy of Sciences (CN)
- Zhejiang University (CN)
Publication Details
- Journal
- Advanced Functional Materials
- Published
- 2025-11-11
- DOI
- https://doi.org/10.1002/adfm.202522145
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00