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Widely tunable black phosphorus mid-infrared photodetector
Open accessAbstract
Lately rediscovered orthorhombic black phosphorus (BP) exhibits promising properties for near- and mid-infrared optoelectronics. Although recent electrical measurements indicate that a vertical electric field can effectively reduce its transport bandgap, the impact of the electric field on light-matter interaction remains unclear. Here we show that a vertical electric field can dynamically extend the photoresponse in a 5 nm-thick BP photodetector from 3.7 to beyond 7.7 μm, leveraging the Stark effect. We further demonstrate that such a widely tunable BP photodetector exhibits a peak extrinsic photo-responsivity of 518, 30, and 2.2 mA W−1 at 3.4, 5, and 7.7 μm, respectively, at 77 K. Furthermore, the extracted photo-carrier lifetime indicates a potential operational speed of 1.3 GHz. Our work not only demonstrates the potential of BP as an alternative mid-infrared material with broad optical tunability but also may enable the compact, integrated on-chip high-speed mid-infrared photodetectors, modulators, and spectrometers.
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Photodetectors based on graphene, other two-dimensional materials and hybrid systems
Koppens, F. H. L., Mueller, T., Avouris, P., Ferrari, A. C., Vitiello, M. S., & Polini, M. (2014) · Nature Nanotechnology · doi:10.1038/nnano.2014.215 · Cited by 3,828
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Long, M., Wang, P., Fang, H., & Hu, W. (2019) · Advanced Functional Materials · doi:10.1002/adfm.201803807 · Cited by 1,598
Emerging Applications of Elemental 2D Materials
Glavin, N. R., Rao, R., Varshney, V., Bianco, E., Apte, A., Roy, A., Ringe, E., & Ajayan, P. M. (2020) · Advanced Materials · doi:10.1002/adma.201904302 · Cited by 655
Stable mid-infrared polarization imaging based on quasi-2D tellurium at room temperature
Tong, L., Huang, X., Wang, P., Ye, L., Peng, M., An, L., Sun, Q., Zhang, Y., Yang, G., Li, Z., et al. (2020) · Nature Communications · doi:10.1038/s41467-020-16125-8 · Cited by 485
Silicon/2D-material photodetectors: from near-infrared to mid-infrared
Liu, C., Guo, J., Yu, L., Li, J., Zhang, M., Li, H., Shi, Y., & Dai, D. (2021) · Light: Science & Applications · doi:10.1038/s41377-021-00551-4 · Cited by 473
Zeng, L., Wu, D., Jie, J., Ren, X., Hu, X., Lau, S. P., Chai, Y., & Tsang, Y. H. (2020) · Advanced Materials · doi:10.1002/adma.202004412 · Cited by 419
Metadata
- Authors
- Chen, X., Lu, X., Deng, B., Sinai, O., Shao, Y., Li, C., Yuan, S., Tran, V., Watanabe, K., Taniguchi, T., Naveh, D., Yang, L., & Xia, F.
- Venue
- Nature Communications
- Published
- 2017-11-22
- Volume
- 8
- Issue
- 1
- Pages
- 1672-1672
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2770938565
- Cited by
- 410
- References
- 1
- FWCI
- 15.02
- Type
- journal article
- Language
- en
- Open access
- gold
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