High performance Van der Waals heterostructure photodetectors based on black phosphorus

Tian-Yun Chang; Po-Liang Chen; Jhih-Heng Yan; Wei-Qing Li; Ya-Yun Zhang; De-In Luo; Jia-Xin Li; Kun-Ping Huang; Chang-Hua Liu

doi:10.1117/12.2580526

8 November 2020 High performance Van der Waals heterostructure photodetectors based on black phosphorus

Tian-Yun Chang, Po-Liang Chen, Jhih-Heng Yan, Wei-Qing Li, Ya-Yun Zhang, De-In Luo, Jia-Xin Li, Kun-Ping Huang, Chang-Hua Liu

Author Affiliations +

Proceedings Volume 11525, SPIE Future Sensing Technologies; 115251A (2020) https://doi.org/10.1117/12.2580526
Event: SPIE Future Sensing Technologies, 2020, Online Only

Abstract

In this talk, we will demonstrate a heterostructure that consists of two graphene layers, a bulk BP and a 18 nm-thick hBN. The maximum responsivity reaches 1.43 A/W (corresponding to EQE of 52%) at wavelength of 3.4 μm, and the overall efficiency, from visible to MIR, can exceed 20%. Additionally, the performed photodetector can exhibit ultrafast rise and fall times (< 2 ns), and the switching behavior of photodetector is highly reproducible as confirmed by the eye diagram measurement with the data rate at 250 Mbits/s. Finally, we examine the capability of MIR imaging of our detector. The acquired images exhibit high sharpness and contrast even under low light intensity illumination and fast scanning conditions.

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Citation Download Citation

Tian-Yun Chang, Po-Liang Chen, Jhih-Heng Yan, Wei-Qing Li, Ya-Yun Zhang, De-In Luo, Jia-Xin Li, Kun-Ping Huang, and Chang-Hua Liu "High performance Van der Waals heterostructure photodetectors based on black phosphorus", Proc. SPIE 11525, SPIE Future Sensing Technologies, 115251A (8 November 2020); https://doi.org/10.1117/12.2580526

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