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1State Key Laboratory of Optoelectronic Materials and Technologies, Nanotechnology Research Center, School of Materials Science & Engineering, Sun Yat-sen University, Guangzhou 510275, Guangdong, P. R. China. stsygw@mail.sysu.edu.cn.
Nanoscale
|December 18, 2019
Summary
This review explores advanced broadband photodetectors (BBPDs) using 2D materials (2DMs). It covers various 2DM types, defect engineering, and mixed-dimensional designs for future BBPD development.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Broadband photodetectors (BBPDs) are crucial optoelectronic devices.
- Two-dimensional materials (2DMs) offer unique properties for advanced BBPDs.
Purpose of the Study:
- To provide a comprehensive review of recent advancements in 2DM-based BBPDs.
- To highlight diverse 2DM materials and engineering strategies for BBPDs.
Main Methods:
- Review of literature on various 2DM channels (narrow-bandgap, topological semimetals, charge density wave compounds, heterojunctions).
- Exploration of defect engineering techniques (vacancy, heteroatom, interfacial).
- Analysis of mixed-dimensional (0D-2D, 1D-2D, 2D-3D, 0D-2D-3D) BBPD architectures.
Main Results:
- Categorization of BBPDs based on 2DM channel types.
- Detailed examination of defect engineering's impact on BBPD performance.
- Overview of mixed-dimensional BBPD designs and their potential.
Conclusions:
- 2DMs are highly promising for next-generation BBPDs.
- Defect engineering and mixed-dimensional designs offer pathways to enhanced photodetector performance.
- Future research should focus on optimizing these strategies for practical applications.
