Multispectral Integrated Black Arsenene Phototransistors for High-Resolution Imaging and Enhanced Secure Communication

The demand for broadband, room-temperature infrared, and terahertz (THz) detectors is rapidly increasing owing to crucial applications in telecommunications, security screening, nondestructive testing, and medical diagnostics. Current photodetectors face significant challenges, including high intrinsic dark currents and the necessity for cryogenic cooling, which limit their effectiveness in detecting low-energy photons. Here, we introduce a high-performance ultrabroadband photodetector operating at room temperature based on two-dimensional black arsenene (b-As) nanosheets. This device demonstrates responsivity across visible, near-infrared, and THz spectral ranges, with responsivities reaching 91.6 A/W at 520 nm, 6.3 A/W at 1550 nm, and 7.8 V/W at 0.27 THz. The exceptional THz responsivity is attributed to the use of plasma-wave rectification in antenna-integrated field-effect transistors with asymmetric antennas, enhancing light-matter interaction and facilitating nonlinear rectification within the two-dimensional electron gas of the transistor channel, achieving a voltage-dependent bipolar response. These advanced b-As-based photodetectors also enable secure THz communication through complex logic operations, achieving robust data encryption and high-performance signal processing.

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Publication Details

Journal
ACS Nano
Published
2024-12-31
DOI
https://doi.org/10.1021/acsnano.4c14512
Citations
11
Primary Topic
2D Materials and Applications
Type
article
Field-Weighted Citation Impact
1.29

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article

Multispectral Integrated Black Arsenene Phototransistors for High-Resolution Imaging and Enhanced Secure Communication

Yingdong Wei, Jiale He, Weiwei Tang, Haibo Shu et al.
11 citations
ACS Nano
2D Materials and Applications
1.29
article

Multispectral Integrated Black Arsenene Phototransistors for High-Resolution Imaging and Enhanced Secure Communication

Yingdong Wei, Jiale He, Weiwei Tang, Haibo Shu, Shijian Tian, Changlong Liu, Antonio Politano, Libo Zhang, Kaixuan Zhang, Xiaoshuang Chen, Zhang Shi, Yuan He, Mengjie Jiang, Li Han, Lin Wang
article en
11 citations

Abstract

The demand for broadband, room-temperature infrared, and terahertz (THz) detectors is rapidly increasing owing to crucial applications in telecommunications, security screening, nondestructive testing, and medical diagnostics. Current photodetectors face significant challenges, including high intrinsic dark currents and the necessity for cryogenic cooling, which limit their effectiveness in detecting low-energy photons. Here, we introduce a high-performance ultrabroadband photodetector operating at room temperature based on two-dimensional black arsenene (b-As) nanosheets. This device demonstrates responsivity across visible, near-infrared, and THz spectral ranges, with responsivities reaching 91.6 A/W at 520 nm, 6.3 A/W at 1550 nm, and 7.8 V/W at 0.27 THz. The exceptional THz responsivity is attributed to the use of plasma-wave rectification in antenna-integrated field-effect transistors with asymmetric antennas, enhancing light-matter interaction and facilitating nonlinear rectification within the two-dimensional electron gas of the transistor channel, achieving a voltage-dependent bipolar response. These advanced b-As-based photodetectors also enable secure THz communication through complex logic operations, achieving robust data encryption and high-performance signal processing.

ACS NanoVol. 19(3)
Donghua University (CN), University of L'Aquila (IT), Shanghai Institute of Technical Physics (CN), University of Chinese Academy of Sciences (CN), China Jiliang University (CN)
Natural Science Foundation of Shanghai, National Natural Science Foundation of China, Chinese Academy of Sciences, China Postdoctoral Science Foundation, Science and Technology Commission of Shanghai Municipality, Major Scientific Project of Zhejiang Laboratory, Ministero dell'Università e della Ricerca, National Key Research and Development Program of China
Openalex Percentile: Top 16%
2D Materials and Applications
1.29
DOISourceOpenAlex
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