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Published on: October 12, 2019
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Infrared Photodetection from 2D/3D van der Waals Heterostructures
Qianying Tang1,2, Fang Zhong1,2,3, Qing Li1,2,3
1Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou 310024, China.
Nanomaterials (Basel, Switzerland)
|April 13, 2023
Summary
Hybrid 2D/3D van der Waals heterojunctions enhance infrared photodetectors by improving quantum efficiency and response speed. This review explores their potential for next-generation infrared detection systems.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Infrared photodetectors are crucial for target detection across various fields.
- Current 3D bulk material detectors face limitations in performance and multi-dimensional capability.
- Emerging 2D materials offer potential but suffer from thickness and preparation issues.
Purpose of the Study:
- To review the progress of 2D/3D hybrid van der Waals heterojunctions for infrared photodetection.
- To summarize the physical properties of 2D and 3D materials relevant to photodetection.
- To discuss performance improvements and new functional devices.
Main Methods:
- Summarizing physical properties of 2D and 3D materials (thickness, band gap, absorption, quantum efficiency, mobility).
- Reviewing research on 2D/3D infrared detectors focusing on performance enhancement.
- Analyzing strategies for broadband, high-responsivity, and fast-response detectors.
Main Results:
- Combining low-doped 3D and flexible 2D materials significantly improves responsivity and detection speed.
- Anisotropic 2D lattices with 3D materials enable high-performance polarization detectors.
- 2D/3D heterojunctions address quantum efficiency and response speed limitations of 2D materials.
Conclusions:
- 2D/3D hybrid van der Waals heterojunctions represent a promising avenue for next-generation infrared detection.
- These hybrid structures offer enhanced performance, including broadband detection, high responsivity, and fast response times.
- Future research should focus on optimizing these heterojunctions for advanced infrared sensing applications.
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