Volume 14 Issue 1
Jan.  2021
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Chinese Optics  > 2021  >  14(1): 135-144.
REN Zhi-hui, ZHONG Mian-zeng, YANG Jue-han, WEI Zhong-ming. A polarization-sensitive photodetector based on a AsP/MoS2 heterojunction[J]. Chinese Optics, 2021, 14(1): 135-144. doi: 10.37188/CO.2020-0189
Citation: REN Zhi-hui, ZHONG Mian-zeng, YANG Jue-han, WEI Zhong-ming. A polarization-sensitive photodetector based on a AsP/MoS2 heterojunction[J]. Chinese Optics, 2021, 14(1): 135-144. doi: 10.37188/CO.2020-0189
shu

A polarization-sensitive photodetector based on a AsP/MoS2 heterojunction

  • 1.

    State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

  • 2.

    Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

  • 3.

    Hunan Key Laboratory of Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha 410083, China

Funds:  National Key Research and Development Program of China (No. 2017YFA0207500); the National Natural Science Foundation of China (No. 62004193); Beijing National Laboratory for Molecular Sciences (No. BNLMS201908)
More Information
  • Corresponding author: zmwei@semi.ac.cn
  • Received Date: 21 Oct 2020
  • Rev Recd Date: 12 Nov 2020
    • Available Online: 19 Dec 2020
  • Publish Date: 25 Jan 2021
    Abstract
  • The ability to detect linearly polarized light is an important index for evaluating polarized photoelectric detectors. Black arsenic phosphorus (b-AsP) is a relatively stable anisotropic material, and is sensitive to linearly polarized light because of its anisotropy inside its planar structure. The material has important application value in polarization detection. This paper introduces a polarization-sensitive photodetector based on AsP/MoS2. Due to the anisotropic light absorption of AsP, effective carrier collection and strong carrier transport capacity of MoS2, as well as the suppression of dark current by a van der Waals heterojunction, the performance of the photodector shows relatively large on/off ratios. Moreover, the photodector has a current optical responsivity of 0.27 A/W and a detectivity of 2×1010 Jones, and more importantly, achieves a dichroic ratio of up to 3.06 at 638 nm. These experimental results show that AsP/MoS2 heterostructures have broad application prospects in the field of polarized photoelectricity detection.

     

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