研究目的
To review the development of BP-based photodetectors, highlight the merits of the important works, and share opinion on the possible improvements in these works.
研究成果
BP-based photodetectors show promise for a wide range of applications from ultraviolet to mid-infrared, thanks to BP's unique properties. Waveguide-integrated BP photodetectors are particularly promising for dense telecommunication and on-chip sensing applications. However, challenges remain in the scalable synthesis of BP and the mechanical robustness of BP on waveguides.
研究不足
The mechanical robustness of BP on waveguide remains challenging, and wafer-level growth of BP is needed for scalable integration for mass production. The synthesis of wafer-scale thin-film BP is a major challenge, with current methods like tape exfoliation not being scalable or controllable.
1：Experimental Design and Method Selection:
The paper reviews various designs of BP-based photodetectors, including surface-illuminated and waveguide-integrated configurations, utilizing BP's properties for photodetection.
2：Sample Selection and Data Sources:
The study references multiple experimental works on BP photodetectors, analyzing their performance metrics such as responsivity, dark current, and detection speed.
3：List of Experimental Equipment and Materials:
Includes BP flakes, Si waveguides, Ge, InGaAs, graphene, and MoTe2 as materials for photodetectors.
4：Experimental Procedures and Operational Workflow:
Describes the fabrication and integration processes of BP photodetectors on various substrates and their characterization under different wavelengths and conditions.
5：Data Analysis Methods:
Performance metrics like responsivity, dark current, and detection speed are analyzed to evaluate the photodetectors' efficiency.
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