Fully Depleted Self-Aligned Heterosandwiched Van Der Waals Photodetectors
F. Wang; Z. Y. Liu; T. Zhang; M. S. Long; X. X. Wang; R. Z. Xie; H. N. Ge; H. Wang; J. Hou; Y. Gu; X. Hu; Z. Song; S. F. Wang; Q. S. Dong; K. C. Liao; Y. B. Tu; T. Han; F. Li; Z. Y. Zhang; X. Y. Hou; S. L. Wang; L. Li; X. A. Zhang; D. X. Zhao; C. X. Shan; L. Shan and W. D. Hu
Source PublicationAdvanced Materials
AbstractRoom-temperature-operating highly sensitive mid-wavelength infrared (MWIR) photodetectors are utilized in a large number of important applications, including night vision, communications, and optical radar. Many previous studies have demonstrated uncooled MWIR photodetectors using 2D narrow-bandgap semiconductors. To date, most of these works have utilized atomically thin flakes, simple van der Waals (vdW) heterostructures, or atomically thin p-n junctions as absorbers, which have difficulty in meeting the requirements for state-of-the-art MWIR photodetectors with a blackbody response. Here, a fully depleted self-aligned MoS2-BP-MoS2 vdW heterostructure sandwiched between two electrodes is reported. This new type of photodetector exhibits competitive performance, including a high blackbody peak photoresponsivity up to 0.77 A W-1 and low noise-equivalent power of 2.0 x 10(-14) W Hz(-1/2), in the MWIR region. A peak specific detectivity of 8.61 x 10(10) cm Hz(1/2) W-1 under blackbody radiation is achieved at room temperature in the MWIR region. Importantly, the effective detection range of the device is twice that of state-of-the-art MWIR photodetectors. Furthermore, the device presents an ultrafast response of approximate to 4 mu s both in the visible and short-wavelength infrared bands. These results provide an ideal platform for realizing broadband and highly sensitive room-temperature MWIR photodetectors.
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F. Wang,Z. Y. Liu,T. Zhang,et al. Fully Depleted Self-Aligned Heterosandwiched Van Der Waals Photodetectors[J]. Advanced Materials,2022,34(39):10.
APA F. Wang.,Z. Y. Liu.,T. Zhang.,M. S. Long.,X. X. Wang.,...&L. Shan and W. D. Hu.(2022).Fully Depleted Self-Aligned Heterosandwiched Van Der Waals Photodetectors.Advanced Materials,34(39),10.
MLA F. Wang,et al."Fully Depleted Self-Aligned Heterosandwiched Van Der Waals Photodetectors".Advanced Materials 34.39(2022):10.
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