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Updated: Mar 24, 2026
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Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors
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A Polarization-Sensitive ReS2/Si Junction Field-Effect Synaptic Transistor for Biometric Authentication and Imaging
Jian Chai1, Rui Yuan2, Ai Chen2
1College of Integrated Circuits, State Key Laboratory of Silicon and Advanced Semiconductor Materials, ZJU-HIC, Center of CMOS IC Manufacturing Process and Design, Zhejiang University, Hangzhou 310027, China.
ACS Applied Materials & Interfaces
|March 23, 2026
Summary
This study introduces a novel ReS2/p+-Si phototransistor for advanced polarization vision sensing. This device efficiently processes visual information, mimicking insect polarization vision for enhanced neuromorphic sensing applications.
Area of Science:
- Materials Science
- Optoelectronics
- Neuromorphic Engineering
Background:
- Insect-inspired polarization vision utilizes light polarization for enhanced environmental perception.
- Existing polarization-sensitive vision devices suffer from performance, power, and CMOS compatibility issues.
Purpose of the Study:
- To develop a novel ReS2/p+-Si polarization-sensitive synaptic junction field-effect phototransistor.
- To enable on-device visual preprocessing using light polarization for reduced computational load.
Main Methods:
- Fabrication of a ReS2/p+-Si heterojunction device.
- Characterization of transistor performance and polarization-tunable synaptic response.
Main Results:
- The device demonstrates excellent transistor characteristics: mobility of 12.5 cm2 V-1 s-1, subthreshold swing of 74 mV/dec, and on/off ratio of 10^5.
- Achieved polarization-dependent functionalities including contrast enhancement, glare suppression, and fingerprint recognition.
Conclusions:
- The ReS2/p+-Si phototransistor offers an energy-efficient solution for polarization-enhanced neuromorphic vision sensing.
- This technology paves the way for advanced visual preprocessing in artificial vision systems.
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