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Related Experiment Video

Updated: Apr 22, 2026

Fabrication of Flexible Image Sensor Based on Lateral NIPIN Phototransistors

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Published on: June 23, 2018

Reconfigurable in-Sensor Image Enhancement Based on Tunable Band Alignment of In₂Se₃/PdSe₂ Heterojunction.

Yuting Ye^1,2, Jianghong Wu^1,2, Yin Zhang^2,3

¹Zhejiang Key Laboratory of 3D Micro/Nano Fabrication and Characterization, Department of Electronic and Information Engineering, School of Engineering, Westlake University, Hangzhou 310030, China.

|April 21, 2026

Summary

This summary is machine-generated.

Researchers developed a reconfigurable in-sensor image enhancement strategy using a novel ferroelectric heterojunction. This breakthrough enables adaptive imaging modes, reducing power consumption and latency in vision systems.

Keywords:

2D van der Waals heterojunction Adaptive imaging Ferroelectric heterostructure Image enhancement In-sensor computing Reconfigurable in-sensor imaging

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Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

Area of Science:

Materials Science
Optoelectronics
Nanotechnology

Background:

In-sensor computing is crucial for overcoming power and latency issues in vision systems.
Ferroelectric materials offer unique properties for electronic device applications.
Image enhancement techniques are vital for improving visual data quality.

Purpose of the Study:

To demonstrate a reconfigurable in-sensor image enhancement strategy.
To utilize an In2Se3/PdSe2 ferroelectric heterojunction for adaptive imaging.
To develop a compact and energy-efficient solution for intelligent vision systems.

Main Methods:

Fabrication of an In2Se3/PdSe2 ferroelectric heterojunction photodetector.
Characterization of broadband spectral response and high external quantum efficiency.
Leveraging electrostatic and ferroelectric fields for tunable band alignment and carrier collection efficiency.
Implementation of a gate-tunable nonlinear photocurrent response.

Main Results:

The photodetector showed a broadband spectral response (400-1550 nm) and external quantum efficiency >10^4%.
Programmable carrier collection efficiency was achieved through band alignment tuning.
A gate-tunable nonlinear photocurrent response enabled dual adaptive imaging modes: low-light amplification and overexposure recovery.
Hardware-level nonlinearity bypassed redundant data transmission.

Conclusions:

The developed strategy offers a compact and energy-efficient solution for intelligent vision systems.
Reconfigurable in-sensor computing via ferroelectric heterojunctions shows significant promise for advanced imaging.
This approach enhances adaptive imaging capabilities by enabling dual modes within a single photodetector.