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2D materials beyond graphene toward Si integrated infrared optoelectronic devices
Changyong Lan1, Zhe Shi, Rui Cao
1State Key Laboratory of Electronic Thin Films and Integrated Devices, and School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China. lichun@uestc.edu.cn.
Nanoscale
|May 29, 2020
Summary
Semiconducting 2D materials offer a promising alternative to graphene for infrared optoelectronics. Their integration with silicon enables advancements in light-emitting devices, modulators, and photodetectors for diverse applications.
Area of Science:
- Materials Science
- Nanotechnology
- Optoelectronics
Background:
- Graphene, discovered in 2004, is a popular material but its zero band gap and low light absorption limit optoelectronic applications.
- Infrared (IR) light is crucial for applications like night vision, remote sensing, and optical communication, necessitating efficient generation, modulation, and detection.
- Semiconducting two-dimensional (2D) materials are emerging as strong candidates for next-generation optoelectronic devices.
Purpose of the Study:
- To review recent advancements in semiconducting 2D materials for infrared (IR) optoelectronic devices.
- To highlight the potential of 2D materials beyond graphene for IR applications.
- To discuss challenges and future directions in the field.
Main Methods:
- Comprehensive literature review of semiconducting 2D materials for IR optoelectronics.
- Analysis of material properties suitable for IR applications.
- Examination of 2D material integration with silicon, facilitated by van der Waals interactions.
Main Results:
- Semiconducting 2D materials overcome graphene's limitations for IR optoelectronics.
- 2D materials are reviewed for applications in IR light-emitting devices, optical modulators, and photodetectors.
- Easy integration with silicon is possible due to negligible lattice mismatch.
Conclusions:
- Semiconducting 2D materials are poised to revolutionize IR optoelectronics.
- Further research is expected to yield significant industrial breakthroughs in 2D material-based nanodevices.
- The integration of 2D materials with silicon is a key enabler for practical applications.
