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- W3128432863 abstract "Recently, heterojunction photodetectors have attracted significant interest due to the multiple degrees of freedom reorganization, integrating advantages of different typed materials. Herein, a high-performance photodetector based on a 3D Dirac semimetal Cd3As2/tungsten disulfide (WS2) heterojunction is demonstrated, which is constructed by directly transferring exfoliated 2D few layer WS2 on Cd3As2 nano-belt and following by annealing treatment. The resulting Cd3As2/WS2 heterojunction device presents superior performance with a high on/off ratio (≈5.3 × 104) and a responsivity (Ri) of about 223.5 AW−1 at 520 nm, as well as an outstanding detectivity (D*) of about 2.05 × 1014 Jones at 808 nm near-IR waveband. However, the optimized noise equivalent power (NEP) is evaluated about 6.17 × 10−14 WHz−1/2 by the noise power density spectrum. The excellent performance can be attributed to a high-quality heterostructure interface, strong light absorption capacity, and ultralow dark current in a Cd3As2/WS2 heterojunction system. This work provides a promising platform to develop a high-performance optoelectronic device based on 3D Dirac semimetal and 2D TMDs families." @default.
- W3128432863 created "2021-02-15" @default.
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- W3128432863 date "2021-05-02" @default.
- W3128432863 modified "2023-10-17" @default.
- W3128432863 title "High‐Performance Photodetector based on a 3D Dirac Semimetal Cd <sub>3</sub> As <sub>2</sub> /Tungsten Disulfide (WS <sub>2</sub> ) van der Waals Heterojunction" @default.
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- W3128432863 doi "https://doi.org/10.1002/adpr.202000194" @default.
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