Strong photothermoelectric response of the semimetal ZrTe3

Chunyu Song; Hang Xu; Hui Li; Fan Yang; Yating Zhang; Jianquan Yao

doi:10.1117/12.2685220

26 November 2023 Strong photothermoelectric response of the semimetal ZrTe₃

Chunyu Song, Hang Xu, Hui Li, Fan Yang, Yating Zhang, Jianquan Yao

Proceedings Volume 12776, Infrared, Millimeter-Wave, and Terahertz Technologies X; 127760E (2023) https://doi.org/10.1117/12.2685220
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

Photodetectors based on the photothermoelectric effect (PTE) have garnered significant attention due to their high-speed photoresponse and other notable characteristics. The PTE photodetector possesses inherent advantages in terms of a wide spectral range. Studies have demonstrated that infrared photodetectors based on the photothermoelectric effect are not limited by the operating wavelength. The photothermoelectric infrared photodetectors based on semimetallic ZrTe₃ have not yet been reported. We employed first-principles calculations to demonstrate the significant Seebeck coefficient of ZrTe₃, providing a crucial foundation for achieving photo-thermoelectric response. Moreover, we fabricated a metal-ZrTe₃-metal photothermal infrared photodetector using the dry transfer process. The photodetector achieves a responsivity of up to 45 mA/W at the 1177 nm. Additionally, it demonstrated an ultrafast response time of 316 μs, highlighting the exceptional functionality of semi-metallic ZrTe₃ as a detection layer.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Chunyu Song, Hang Xu, Hui Li, Fan Yang, Yating Zhang, and Jianquan Yao "Strong photothermoelectric response of the semimetal ZrTe₃", Proc. SPIE 12776, Infrared, Millimeter-Wave, and Terahertz Technologies X, 127760E (26 November 2023); https://doi.org/10.1117/12.2685220

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