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A self-powered high-performance graphene/silicon ultraviolet photodetector with ultra-shallow junction: breaking the limit of silicon?
Open accessAbstract
We present a self-powered, high-performance graphene-enhanced ultraviolet silicon Schottky photodetector. Different from traditional transparent electrodes, such as indium tin oxides or ultra-thin metals, the unique ultraviolet absorption property of graphene leads to long carrier life time of hot electrons that can contribute to the photocurrent or potential carrier-multiplication. Our proposed structure boosts the internal quantum efficiency over 100%, approaching the upper-limit of silicon-based ultraviolet photodetector. In the near-ultraviolet and mid-ultraviolet spectral region, the proposed ultraviolet photodetector exhibits high performance at zero-biasing (self-powered) mode, including high photo-responsivity (0.2 A W−1), fast time response (5 ns), high specific detectivity (1.6 × 10 13 Jones), and internal quantum efficiency greater than 100%. Further, the photo-responsivity is larger than 0.14 A W−1 in wavelength range from 200 to 400 nm, comparable to that of state-of-the-art Si, GaN, SiC Schottky photodetectors. The photodetectors exhibit stable operations in the ambient condition even 2 years after fabrication, showing great potential in practical applications, such as wearable devices, communication, and “dissipation-less” remote sensor networks.
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Recent Progress and Future Prospects of 2D‐Based Photodetectors
Huo, N., & Konstantatos, G. (2018) · Advanced Materials · doi:10.1002/adma.201801164 · Cited by 730
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Self-citation2D Materials in Flexible Electronics: Recent Advances and Future Prospectives
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Metadata
- Authors
- Wan, X., Xu, Y., Guo, H., Shehzad, K., Ali, A., Liu, Y., Yang, J., Dai, D., Lin, C.-T., Liu, L., Cheng, H.-C., Wang, F., Wang, X., Lu, H., Hu, W., Pi, X., Dan, Y., Luo, J., Hasan, T., Duan, X., Li, X., Xu, J., Yang, D., Ren, T., & Yu, B.
- Venue
- npj 2D Materials and Applications
- Published
- 2017-04-11
- Volume
- 1
- Issue
- 1
- ISSN
- 2397-7132 (ISSN-L)
- OpenAlex
- W2606810695
- Cited by
- 316
- References
- 38
- FWCI
- 13.76
- Type
- journal article
- Language
- en
- Open access
- gold
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- Wan, X., Xu, Y., Guo, H., Shehzad, K., Ali, A., Liu, Y., Yang, J., Dai, D., Lin, C.-T., Liu, L., Cheng, H.-C., Wang, F., Wang, X., Lu, H., Hu, W., Pi, X., Dan, Y., Luo, J., Hasan, T., . . . Yu, B. (2017). A self-powered high-performance graphene/silicon ultraviolet photodetector with ultra-shallow junction: breaking the limit of silicon? npj 2D Materials and Applications. https://doi.org/10.1038/s41699-017-0008-4
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