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A self-powered and sensitive terahertz photodetection based on PdSe2 |
| Jie Zhou(周洁)1,2, Xueyan Wang(王雪妍)1,2, Zhiqingzi Chen(陈支庆子)2, Libo Zhang(张力波)2, Chenyu Yao(姚晨禹)2, Weijie Du(杜伟杰)1, Jiazhen Zhang(张家振)2, Huaizhong Xing(邢怀中)2, Nanxin Fu(付南新)2, Gang Chen(陈刚)2, and Lin Wang(王林)1,2,† |
1 Mathematics and Science College, Shanghai Normal University, Shanghai 200233, China;
2 Shanghai Institute of Technical Physics, State Key Laboratory of Infrared Physics, Chinese Academy of Sciences, Shanghai 200083, China |
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Abstract With the rapid development of terahertz technology, terahertz detectors are expected to play a key role in diverse areas such as homeland security and imaging, materials diagnostics, biology, medical sciences, and communication. Whereas self-powered, rapid response, and room temperature terahertz photodetectors are confronted with huge challenges. Here, we report a novel rapid response and self-powered terahertz photothermoelectronic (PTE) photodetector based on a low-dimensional material: palladium selenide (PdSe2). An order of magnitude performance enhancement was observed in photodetection based on PdSe2/graphene heterojunction that resulted from the integration of graphene and enhanced the Seebeck effect. Under 0.1-THz and 0.3-THz irradiations, the device displays a stable and repeatable photoresponse at room temperature without bias. Furthermore, rapid rise (5.0 μs) and decay (5.4 μs) times are recorded under 0.1-THz irradiation. Our results demonstrate the promising prospect of the detector based on PdSe2 in terms of air-stable, suitable sensitivity and speed, which may have great application in terahertz detection.
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Received: 02 November 2021
Revised: 17 December 2021
Accepted manuscript online:
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PACS:
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07.57.Hm
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(Infrared, submillimeter wave, microwave, and radiowave sources)
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73.40.-c
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(Electronic transport in interface structures)
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85.60.Gz
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(Photodetectors (including infrared and CCD detectors))
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos.61521005,61875217,91850208,61474130,and 62075230),the Natural Science Foundation of Shanghai,China (Grant Nos.19ZR1465400,21ZR1473800,and 20142200600),and the Fund from Zhejiang Laboratory (Grant No.2021MB0AB01). |
Corresponding Authors:
Lin Wang,E-mail:wanglin@mail.sitp.ac.cn
E-mail: wanglin@mail.sitp.ac.cn
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| About author: 2022-1-7 |
Cite this article:
Jie Zhou(周洁), Xueyan Wang(王雪妍), Zhiqingzi Chen(陈支庆子), Libo Zhang(张力波), Chenyu Yao(姚晨禹), Weijie Du(杜伟杰), Jiazhen Zhang(张家振), Huaizhong Xing(邢怀中), Nanxin Fu(付南新), Gang Chen(陈刚), and Lin Wang(王林) A self-powered and sensitive terahertz photodetection based on PdSe2 2022 Chin. Phys. B 31 050701
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