中国物理B ›› 2022, Vol. 31 ›› Issue (5): 50701-050701.doi: 10.1088/1674-1056/ac4908

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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. 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
  • 收稿日期:2021-11-02 修回日期:2021-12-17 发布日期:2022-04-21
  • 通讯作者: Lin Wang,E-mail:wanglin@mail.sitp.ac.cn E-mail:wanglin@mail.sitp.ac.cn
  • 基金资助:
    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).

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. 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
  • Received:2021-11-02 Revised:2021-12-17 Published:2022-04-21
  • Contact: Lin Wang,E-mail:wanglin@mail.sitp.ac.cn E-mail:wanglin@mail.sitp.ac.cn
  • About author:2022-1-7
  • Supported by:
    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).

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摘要： 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.

关键词: two-dimensional material, terahertz photodetector, photothermoelectric (PTE) effect

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.

Key words: two-dimensional material, terahertz photodetector, photothermoelectric (PTE) effect

中图分类号:  (Infrared, submillimeter wave, microwave, and radiowave sources)

  • 07.57.Hm
73.40.-c (Electronic transport in interface structures) 85.60.Gz (Photodetectors (including infrared and CCD detectors))