Citation: |
Jinyong Wu, Donglin Huang, Yujie Ye, Jianyuan Wang, Wei Huang, Cheng Li, Songyan Chen, Shaoying Ke. Theoretical study of a group IV p–i–n photodetector with a flat and broad response for visible and infrared detection[J]. Journal of Semiconductors, 2020, 41(12): 122402. doi: 10.1088/1674-4926/41/12/122402
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J Y Wu, D L Huang, Y J Ye, J Y Wang, W Huang, C Li, S Y Chen, S Y Ke, Theoretical study of a group IV p–i–n photodetector with a flat and broad response for visible and infrared detection[J]. J. Semicond., 2020, 41(12): 122402. doi: 10.1088/1674-4926/41/12/122402.
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Theoretical study of a group IV p–i–n photodetector with a flat and broad response for visible and infrared detection
DOI: 10.1088/1674-4926/41/12/122402
More Information
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Abstract
We report a theoretical study of a broadband Si/graded-SiGe/Ge/Ge0.9Sn0.1 p–i–n photodetector with a flat response based on modulating thickness of the layers in the active region. The responsivity of the photodetector is about 0.57 A/W in the range of 700 to 1800 nm. This structure is suitable for silicon-based epitaxial growth. Annealing is technically applied to form the graded-SiGe. The photodetector reaches a cut-off wavelength at ~2300 nm and a low dark-current density under 3 V reverse bias about 0.17 mA/cm2 is achieved theoretical at room temperature. This work is of great significance for silicon-based detection and communication, from visible to infrared.-
Keywords:
- flat response,
- broad response,
- dark current density,
- graded-SiGe,
- Ge0.9Sn0.1
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References
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