Recent Advances in Broadband Photodetectors from Infrared to Terahertz

Si, Wei; Zhou, Wenbin; Liu, Xiangze; Wang, Ke; Liao, Yiming; Yan, Feng; Ji, Xiaoli

doi:10.3390/mi15040427

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Recent Advances in Broadband Photodetectors from Infrared to Terahertz

by

Wei Si

^1,†,

Wenbin Zhou

^1,†,

Xiangze Liu

¹,

Ke Wang

¹,

Yiming Liao

²,

Feng Yan

¹ and

Xiaoli Ji

^1,*

¹

School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, China

²

School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

^*

Author to whom correspondence should be addressed.

^†

These authors contributed equally to this work.

Micromachines 2024, 15(4), 427; https://doi.org/10.3390/mi15040427

Submission received: 19 February 2024 / Revised: 15 March 2024 / Accepted: 19 March 2024 / Published: 22 March 2024

(This article belongs to the Special Issue Semiconductors and Nanostructures for Electronics and Photonics, Second Edition)

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Abstract

The growing need for the multiband photodetection of a single scene has promoted the development of both multispectral coupling and broadband detection technologies. Photodetectors operating across the infrared (IR) to terahertz (THz) regions have many applications such as in optical communications, sensing imaging, material identification, and biomedical detection. In this review, we present a comprehensive overview of the latest advances in broadband photodetectors operating in the infrared to terahertz range, highlighting their classification, operating principles, and performance characteristics. We discuss the challenges faced in achieving broadband detection and summarize various strategies employed to extend the spectral response of photodetectors. Lastly, we conclude by outlining future research directions in the field of broadband photodetection, including the utilization of novel materials, artificial microstructure, and integration schemes to overcome current limitations. These innovative methodologies have the potential to achieve high-performance, ultra-broadband photodetectors.

Keywords: broadband photodetectors; infrared; terahertz; photoelectric detectors; thermoelectric detectors

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MDPI and ACS Style

Si, W.; Zhou, W.; Liu, X.; Wang, K.; Liao, Y.; Yan, F.; Ji, X. Recent Advances in Broadband Photodetectors from Infrared to Terahertz. Micromachines 2024, 15, 427. https://doi.org/10.3390/mi15040427

AMA Style

Si W, Zhou W, Liu X, Wang K, Liao Y, Yan F, Ji X. Recent Advances in Broadband Photodetectors from Infrared to Terahertz. Micromachines. 2024; 15(4):427. https://doi.org/10.3390/mi15040427

Chicago/Turabian Style

Si, Wei, Wenbin Zhou, Xiangze Liu, Ke Wang, Yiming Liao, Feng Yan, and Xiaoli Ji. 2024. "Recent Advances in Broadband Photodetectors from Infrared to Terahertz" Micromachines 15, no. 4: 427. https://doi.org/10.3390/mi15040427

APA Style

Si, W., Zhou, W., Liu, X., Wang, K., Liao, Y., Yan, F., & Ji, X. (2024). Recent Advances in Broadband Photodetectors from Infrared to Terahertz. Micromachines, 15(4), 427. https://doi.org/10.3390/mi15040427

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Recent Advances in Broadband Photodetectors from Infrared to Terahertz

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