Ultrasensitive Self-Driven Terahertz Photodetectors Based on Low-Energy Type-II Dirac Fermions and Related Van der Waals Heterojunctions

Kaixuan Zhang; Zhen Hu; Libo Zhang; Yulu Chen; Dong Wang; Mengjie Jiang; Gianluca D'Olimpio; Li Han; Chenyu Yao; Zhiqingzi Chen; Huaizhong Xing; Chia Nung Kuo; Chin Shan Lue; Ivana Vobornik; Shao Wei Wang; Antonio Politano; Weida Hu; Lin Wang; Xiaoshuang Chen; Wei Lu

doi:10.1002/smll.202205329

Ultrasensitive Self-Driven Terahertz Photodetectors Based on Low-Energy Type-II Dirac Fermions and Related Van der Waals Heterojunctions

Kaixuan Zhang, Zhen Hu, Libo Zhang, Yulu Chen, Dong Wang, Mengjie Jiang, Gianluca D'Olimpio, Li Han, Chenyu Yao, Zhiqingzi Chen, Huaizhong Xing, Chia Nung Kuo, Chin Shan Lue, Ivana Vobornik, Shao Wei Wang, Antonio Politano, Weida Hu, Lin Wang, Xiaoshuang Chen, Wei Lu

Department of Physics

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

The exotic electronic properties of topological semimetals (TSs) have opened new pathways for innovative photonic and optoelectronic devices, especially in the highly pursuit terahertz (THz) band. However, in most cases Dirac fermions lay far above or below the Fermi level, thus hindering their successful exploitation for the low-energy photonics. Here, low-energy type-II Dirac fermions in kitkaite (NiTeSe) for ultrasensitive THz detection through metal-topological semimetal-metal heterostructures are exploited. Furthermore, a heterostructure combining two Dirac materials, namely, graphene and NiTeSe, is implemented for a novel photodetector exhibiting a responsivity as high as 1.22 A W⁻¹, with a response time of 0.6 µs, a noise-equivalent power of 18 pW Hz^−0.5, with outstanding stability in the ambient conditions. This work brings to fruition of Dirac fermiology in THz technology, enabling self-powered, low-power, room-temperature, and ultrafast THz detection.

Original language	English
Article number	2205329
Journal	Small
Volume	19
Issue number	1
DOIs	https://doi.org/10.1002/smll.202205329
Publication status	Published - 2023 Jan 4

All Science Journal Classification (ASJC) codes

General Chemistry
Engineering (miscellaneous)
Biotechnology
General Materials Science
Biomaterials

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10.1002/smll.202205329

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Zhang, K., Hu, Z., Zhang, L., Chen, Y., Wang, D., Jiang, M., D'Olimpio, G., Han, L., Yao, C., Chen, Z., Xing, H., Kuo, C. N., Lue, C. S., Vobornik, I., Wang, S. W., Politano, A., Hu, W., Wang, L., Chen, X., & Lu, W. (2023). Ultrasensitive Self-Driven Terahertz Photodetectors Based on Low-Energy Type-II Dirac Fermions and Related Van der Waals Heterojunctions. Small, 19(1), Article 2205329. https://doi.org/10.1002/smll.202205329

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title = "Ultrasensitive Self-Driven Terahertz Photodetectors Based on Low-Energy Type-II Dirac Fermions and Related Van der Waals Heterojunctions",

abstract = "The exotic electronic properties of topological semimetals (TSs) have opened new pathways for innovative photonic and optoelectronic devices, especially in the highly pursuit terahertz (THz) band. However, in most cases Dirac fermions lay far above or below the Fermi level, thus hindering their successful exploitation for the low-energy photonics. Here, low-energy type-II Dirac fermions in kitkaite (NiTeSe) for ultrasensitive THz detection through metal-topological semimetal-metal heterostructures are exploited. Furthermore, a heterostructure combining two Dirac materials, namely, graphene and NiTeSe, is implemented for a novel photodetector exhibiting a responsivity as high as 1.22 A W−1, with a response time of 0.6 µs, a noise-equivalent power of 18 pW Hz−0.5, with outstanding stability in the ambient conditions. This work brings to fruition of Dirac fermiology in THz technology, enabling self-powered, low-power, room-temperature, and ultrafast THz detection.",

author = "Kaixuan Zhang and Zhen Hu and Libo Zhang and Yulu Chen and Dong Wang and Mengjie Jiang and Gianluca D'Olimpio and Li Han and Chenyu Yao and Zhiqingzi Chen and Huaizhong Xing and Kuo, {Chia Nung} and Lue, {Chin Shan} and Ivana Vobornik and Wang, {Shao Wei} and Antonio Politano and Weida Hu and Lin Wang and Xiaoshuang Chen and Wei Lu",

note = "Publisher Copyright: {\textcopyright} 2022 Wiley-VCH GmbH.",

year = "2023",

month = jan,

day = "4",

doi = "10.1002/smll.202205329",

language = "English",

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Zhang, K, Hu, Z, Zhang, L, Chen, Y, Wang, D, Jiang, M, D'Olimpio, G, Han, L, Yao, C, Chen, Z, Xing, H, Kuo, CN, Lue, CS, Vobornik, I, Wang, SW, Politano, A, Hu, W, Wang, L, Chen, X & Lu, W 2023, 'Ultrasensitive Self-Driven Terahertz Photodetectors Based on Low-Energy Type-II Dirac Fermions and Related Van der Waals Heterojunctions', Small, vol. 19, no. 1, 2205329. https://doi.org/10.1002/smll.202205329

TY - JOUR

T1 - Ultrasensitive Self-Driven Terahertz Photodetectors Based on Low-Energy Type-II Dirac Fermions and Related Van der Waals Heterojunctions

AU - Zhang, Kaixuan

AU - Hu, Zhen

AU - Zhang, Libo

AU - Chen, Yulu

AU - Wang, Dong

AU - Jiang, Mengjie

AU - D'Olimpio, Gianluca

AU - Han, Li

AU - Yao, Chenyu

AU - Chen, Zhiqingzi

AU - Xing, Huaizhong

AU - Kuo, Chia Nung

AU - Lue, Chin Shan

AU - Vobornik, Ivana

AU - Wang, Shao Wei

AU - Politano, Antonio

AU - Hu, Weida

AU - Wang, Lin

AU - Chen, Xiaoshuang

AU - Lu, Wei

PY - 2023/1/4

Y1 - 2023/1/4

N2 - The exotic electronic properties of topological semimetals (TSs) have opened new pathways for innovative photonic and optoelectronic devices, especially in the highly pursuit terahertz (THz) band. However, in most cases Dirac fermions lay far above or below the Fermi level, thus hindering their successful exploitation for the low-energy photonics. Here, low-energy type-II Dirac fermions in kitkaite (NiTeSe) for ultrasensitive THz detection through metal-topological semimetal-metal heterostructures are exploited. Furthermore, a heterostructure combining two Dirac materials, namely, graphene and NiTeSe, is implemented for a novel photodetector exhibiting a responsivity as high as 1.22 A W−1, with a response time of 0.6 µs, a noise-equivalent power of 18 pW Hz−0.5, with outstanding stability in the ambient conditions. This work brings to fruition of Dirac fermiology in THz technology, enabling self-powered, low-power, room-temperature, and ultrafast THz detection.

AB - The exotic electronic properties of topological semimetals (TSs) have opened new pathways for innovative photonic and optoelectronic devices, especially in the highly pursuit terahertz (THz) band. However, in most cases Dirac fermions lay far above or below the Fermi level, thus hindering their successful exploitation for the low-energy photonics. Here, low-energy type-II Dirac fermions in kitkaite (NiTeSe) for ultrasensitive THz detection through metal-topological semimetal-metal heterostructures are exploited. Furthermore, a heterostructure combining two Dirac materials, namely, graphene and NiTeSe, is implemented for a novel photodetector exhibiting a responsivity as high as 1.22 A W−1, with a response time of 0.6 µs, a noise-equivalent power of 18 pW Hz−0.5, with outstanding stability in the ambient conditions. This work brings to fruition of Dirac fermiology in THz technology, enabling self-powered, low-power, room-temperature, and ultrafast THz detection.

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DO - 10.1002/smll.202205329

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AN - SCOPUS:85141524852

SN - 1613-6810

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JO - Small

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ER -

Ultrasensitive Self-Driven Terahertz Photodetectors Based on Low-Energy Type-II Dirac Fermions and Related Van der Waals Heterojunctions

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