Arrayed Van Der Waals Broadband Detectors for Dual-Band Detection
Peng Wang1,2, Shanshan Liu3, Wenjin Luo1
1National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yutian Road, Shanghai, 200083, China.
Advanced Materials (Deerfield Beach, Fla.)
|February 17, 2017
Summary
Researchers developed a novel dual-band photodetector using 2D GaSe/GaSb for high-resolution imaging. This advancement overcomes key industrialization challenges for 2D materials in photodetection applications.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Photodetectors are crucial for imaging and identification.
- 2D materials offer unique electronic and optical properties but face industrialization hurdles.
- Existing photodetectors often lack dual-band capabilities or require cryogenic cooling.
Purpose of the Study:
- To propose and demonstrate an advanced visible/infrared dual-band photodetector.
- To achieve high-resolution imaging at room temperature for intelligent identification.
- To address limitations hindering the industrialization of 2D-materials-based photodetection.
Main Methods:
- Fabrication of a 2D GaSe/GaSb vertical heterostructure.
- Characterization of the photodetector's performance at room temperature.
- Evaluation of imaging capabilities for intelligent identification.
Main Results:
- Demonstration of a high-resolution visible/infrared dual-band photodetector.
- Achieved fast response speed and outstanding detectivity.
- Overcame challenges in large-scale 2D growth and manufacturing cost.
Conclusions:
- The 2D GaSe/GaSb vertical heterostructure is a promising platform for advanced photodetectors.
- The developed device offers a cost-effective solution for industrial applications.
- This work paves the way for widespread adoption of 2D materials in intelligent identification systems.
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