A near-infrared Sn-Pb perovskite imager with monolithic integration

Ciyu Ge; Chengjie Deng; Jiaxing Zhu; Yongcheng Zhu; Qi Xu; Borui Jiang; Long Chen; Yuxuan Liu; Boxiang Song; Ping Fu; Chao Chen; Liang Gao; Jiang Tang

doi:10.1038/s41377-025-02127-y

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A near-infrared Sn-Pb perovskite imager with monolithic integration

Original Articles

- A near-infrared Sn-Pb perovskite imager with monolithic integration
- A near-infrared Sn-Pb perovskite imager with monolithic integration
- Light: Science & Applications 2026年15卷第3期页码：814-823
- Affiliations：
  
  1.Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information (SOEI), Huazhong University of Science and Technology, Wuhan, China
  2.State Key Laboratory of Pulsed Power Laser Technology, Hefei, China
  3.Optics Valley Laboratory, Wuhan, China
  4.Wenzhou Advanced Manufacturing Technology Research Institute of Huazhong University of Science and Technology, Wuhan, China
  5.JFS Laboratory, Wuhan, China
  6.Key Laboratory of Photoelectric Conversion and Utilization of Solar Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
  7.Shenzhen Huazhong University of Science and Technology Research Institute, Wuhan, China
- Author bio：
  
  Chao Chen (cchen@hust.edu.cn)
  Liang Gao (highlight@hust.edu.cn)
  Jiang Tang (jtang@mail.hust.edu.cn)
- Funds：
- DOI：10.1038/s41377-025-02127-y
  中图分类号：
- 收稿：2025-05-23，
  
  修回：2025-10-15，
  
  录用：2025-11-07，
  
  网络首发：2026-01-20，
  
  纸质出版：2026-03-31
- Accepted：
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Ciyu Ge, Chengjie Deng, Jiaxing Zhu, 等. A near-infrared Sn-Pb perovskite imager with monolithic integration[J]. Light: Science & Applications, 2026,15(3):814-823.

Ge, C. Y. et al. A near-infrared Sn-Pb perovskite imager with monolithic integration. Light: Science & Applications, 15, 814-823 (2026).
Ciyu Ge, Chengjie Deng, Jiaxing Zhu, 等. A near-infrared Sn-Pb perovskite imager with monolithic integration[J]. Light: Science & Applications, 2026,15(3):814-823. DOI： 10.1038/s41377-025-02127-y.

Ge, C. Y. et al. A near-infrared Sn-Pb perovskite imager with monolithic integration. Light: Science & Applications, 15, 814-823 (2026). DOI： 10.1038/s41377-025-02127-y.

摘要

Abstract

Solution-processed Sn-Pb perovskites have emerged as promising candidates for near-in

frared (NIR) photodetectors due to their low-cost

tunable bandgap and scalable fabrication. However

oxidation creates Sn vacancies and undesirable p-type doping

resulting in high dark current and limited detectivity

which hinder the practical deployment of Sn-Pb perovskite photodetectors. Herein

we propose a Sn(SCN)

inorganic molecular surface passivation strategy to suppress Sn

oxidation

significantly reduce surface defect density and enhance the optoelectronic properties (a dark current density of 10 nA cm

−2

at a bias of −0.1 V and a high specific detectivity of ~1.6 × 10

Jones). Leveraging this approach

we report the monolithically integrated Sn-Pb perovskite NIR imager with a complementary metal-oxide-semiconductor readout circuit. The imager

featuring a 640 × 512 pixel array with a 15 μm pixel pitch

achieves an external quantum efficiency of 76% at 940 nm and a modulation transfer function of 206.5 LW/PH at 50%. Furthermore

the Sn-Pb perovskite imager demonstrates advanced material recognition capabilities

including liquid identification

underscoring its potential in chemical sensing

biomedical imaging and industrial inspection.

关键词

Keywords

references

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