Bioinspired phototransistor with tunable sensitivity for low-contrast target detection

Ruyue Han; Dayu Jia; Bo Li; Shun Feng; Guoteng Zhang; Yun Sun; Zheng Han; Chi Liu; Hui-Ming Cheng; Dong-Ming Sun

doi:10.1038/s41377-025-02051-1

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Bioinspired phototransistor with tunable sensitivity for low-contrast target detection

Original Articles

- Bioinspired phototransistor with tunable sensitivity for low-contrast target detection
- Bioinspired phototransistor with tunable sensitivity for low-contrast target detection
- Light: Science & Applications 2026年15卷第1期页码：130-139
- Affiliations：
  
  1.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China
  2.School of Materials Science and Engineering, University of Science and Technology of China, Shenyang, China
  3.School of Information Institution, Liaoning University, Shenyang, China
  4.State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Opto-Electronics, Shanxi University, Taiyuan, China
  5.Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, China
  6.Liaoning Academy of Materials, Shenyang, China
  7.Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- Author bio：
  
  Shun Feng (sfeng@imr.ac.cn)
  Chi Liu (chiliu@imr.ac.cn)
  Dong-Ming Sun (dmsun@imr.ac.cn)
- Funds：
- DOI：10.1038/s41377-025-02051-1
  中图分类号：
- 收稿：2025-03-12，
  
  修回：2025-08-21，
  
  录用：2025-09-15，
  
  网络出版：2026-01-01，
  
  纸质出版：2026-01-31
- Accepted：
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Ruyue Han, Dayu Jia, Bo Li, 等. Bioinspired phototransistor with tunable sensitivity for low-contrast target detection[J]. Light: Science & Applications, 2026,15(1):130-139.

Han, R. Y. et al. Bioinspired phototransistor with tunable sensitivity for low-contrast target detection. Light: Science & Applications, 15, 130-139 (2026).
Ruyue Han, Dayu Jia, Bo Li, 等. Bioinspired phototransistor with tunable sensitivity for low-contrast target detection[J]. Light: Science & Applications, 2026,15(1):130-139. DOI： 10.1038/s41377-025-02051-1.

Han, R. Y. et al. Bioinspired phototransistor with tunable sensitivity for low-contrast target detection. Light: Science & Applications, 15, 130-139 (2026). DOI： 10.1038/s41377-025-02051-1.

摘要

Abstract

Accurate recognition of low-contrast targets in complex visual environments is essential for advanced intelligent machine vision systems. Conventional photodetectors often suffer from a weak photoresponse and a linear dependence of photocurrent on light intensity

which restricts their ability to capture low-contrast features and makes them susceptible to noise. Inspired by the adaptive mechanisms of the human visual system

we present a molybdenum disulfide (MoS

) phototransistor with tunable sensitivity

in which the gate stack incorporates a heterostructure diode—composed of O-plasma-treated MoS

and pristine MoS

—that serves as the photosensitive layer. This configuration enables light-intensity-dependent modulation of the diode's conductance

which dynamically in turn alters the voltage distribution across the gate dielectric and transistor channel

leading to a significant photoresponse. By modulating the gate voltage

the light response range can be finely tuned

maintaining high sensi

tivity to low-contrast targets while suppressing noise interference. Compared to conventional photodetectors

the proposed device achieves a 1000-fold improvement in sensitivity for low-contrast signal detection and exhibits significantly enhanced noise immunity. The intelligent machine vision system built on this device demonstrates exceptional performance in detecting low-contrast targets

underscoring its promise for next-generation machine vision applications.

关键词

Keywords

references

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