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High-sensitivity terahertz rectification and microwave heterodyne mixing with a ZrTe2-based two-terminal rectenna

Year: 2025
Type: article
Abstract: Zirconium telluride (ZrTe2), a three-dimensional Dirac semimetal, combines high carrier mobility with robust environmental and structural stability, making it a suitable material for terahertz (THz) optoelectronics. Here, we report a ZrTe2-based rectenna that integrates broadband THz rectification and heterodyne mixing in a single device. The rectenna exhibits a peak responsivity of 800 V/W over the 0.02–0.32 THz range under 175 mV bias, with an ultrafast response time of 415 ns. Furthermore, it supports higher-order subharmonic mixing up to the 7th order, achieving a 10 dB intermediate frequency bandwidth exceeding 14 GHz. These results underscore the potential of ZrTe2 for compact, high-speed, and nonlinear THz signal detection and processing, with promising implications for next-generation wireless communication and sensing technologies.
DOI: 10.1063/5.0267871
Authors: Yiming Wang, Zhaowen Bao, Xiaokai Pan, Xiaoshuang Chen, Xiaozhong Wang, Xingjun Wang, Lin Wang
Institutions: Xiamen University, Chinese Academy of Sciences, ShanghaiTech University, Shanghai Institute of Technical Physics, State Key Laboratory of Infrared Physics, University of Chinese Academy of Sciences, University of Shanghai for Science and Technology
Language: English
Open Access status: gold
Estimated APC paid: $2,750
Awards: G1136374335, G2667272086, G3052976575, G5455535317, G7888240961, G8007164510
OpenAlex ID: W4413013197
FWCI:
Cites: 61
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Related to: 10