Room-temperature terahertz photodetectors based on black arsenic-phosphorus

Zhuo, Dong Hao; Chen, Jie; Yi-fan, ZHU; Yang, Jie; Wang, Zhongchang; Zhang, Kai

doi:10.37188/co.2020-0175

Cited by 1 publication

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“…f) The comparison of reported typical 2D materials THz photodetectors at 300K (data taken from Refs. [ 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ].…”

Section: Resultsmentioning

confidence: 99%

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Ultrasensitive and Self‐Powered Terahertz Detection Driven by Nodal‐Line Dirac Fermions and Van der Waals Architecture

et al. 2021

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Terahertz detection has been highly sought to open a range of cutting-edge applications in biomedical, high-speed communications, astronomy, security screening, and military surveillance. Nonetheless, these ideal prospects are hindered by the difficulties in photodetection featuring self-powered operation at room temperature. Here, this challenge is addressed for the first time by synthesizing the high-quality ZrGeSe with extraordinary quantum properties of Dirac nodal-line semimetal. Benefiting from its high mobility and gapless nature, a metal-ZrGeSe-metal photodetector with broken mirror symmetry allows for a high-efficiency photoelectric conversion assisted by the photo-thermoelectric effect. The designed architecture features ultrahigh sensitivity, excellent ambient stability, and an efficient rectified signal even above 0.26 THz. Maximum responsivity larger than 0.11 A W −1 , response time of 8.3 μs, noise equivalent power (NEP) less than 0.15 nW Hz −1/2 , and demonstrative imaging application are all achieved. The superb performances with a lower dark current and NEP less than 15 pW Hz −1/2 are validated through integrating the van der Waals heterostructure. These results open up an appealing perspective to explore the nontrivial topology of Dirac nodal-line semimetal by devising the peculiar device geometry that allows for a novel roadmap to address targeted terahertz application requirements.

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“…f) The comparison of reported typical 2D materials THz photodetectors at 300K (data taken from Refs. [ 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ].…”

Section: Resultsmentioning

confidence: 99%

“…f) The comparison of reported typical 2D materials THz photodetectors at 300K (data taken from Refs. [32–44].…”

Section: Resultsmentioning

confidence: 99%