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Simulation design and performance study of Graphene/Mg2Si/Si heterojunction photodetector

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Abstract

In this work, we have reported the structural model of Graphene/Mg2Si/Si heterojunction photodetector and its photoelectric performance parameters such as breakdown voltage, forward conduction voltage, spectral response, responsivity, noise equivalent power, detection degree, and on/off ratio. The simulated data of Graphene/Mg2Si/Si heterojunction photodetectors show the breakdown voltage of 22.41 V, and the forward conduction voltage of 4.81 V. It is found that our designed photodetector shows excellent performance at incident light of 685 nm. In this case, maximum responsivity, maximum detection, and maximum switching ratio are 0.96 A/W, 4.96 × 1011 Jones, 4.9 × 103, respectively. Furthermore, the minimum noise equivalent power of our designed photodetector is 2.02 × 10−12 WHz1/2. Comparative analysis of the data of Graphene/Mg2Si/Si heterojunction photodetector with that of Mg2Si/Si photodetector led us to conclude that our designed photodetector has improved performance.

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Acknowledgements

Project supported by the National Natural Science Foundation of China (Grant No. 61264004), High-level Creative Talent Training Program in Guizhou Province of China (Grant No. [2015]4015), the Science and Technology Foundation of Guizhou Province, China (No. QKHJC [2020]1Y272), the Growth Foundation for Young Scientists of Education Department of Guizhou Province, China (QJHKY [2018]256).

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Authors and Affiliations

  1. The College of Big Data and Information Engineering of Guizhou University, Guiyang, 550025, China

    Hong Yu, Sheng Shu & Quan Xie

  2. The College of Physics and Electronic Science, Guizhou Education University, Guiyang, 550018, China

    Hong Yu

  3. Hubei Branch, China Mobile Online Services Co., Ltd., Wuhan, 430023, China

    Sheng Shu

  4. The College of Electrical Information Engineering, Henan University of Engineering, Zhengzhou, 451191, China

    Xicheng Xiong

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  1. Hong Yu
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Yu, H., Shu, S., Xiong, X. et al. Simulation design and performance study of Graphene/Mg2Si/Si heterojunction photodetector. Appl. Phys. A 127, 548 (2021). https://doi.org/10.1007/s00339-021-04705-4

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