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- W4200577757 abstract "Infrared optoelectronic devices are capable of operating in harsh environments with outstanding confidentiality and reliability. Nevertheless, suffering from the large band gap value, most semiconductor materials are difficult to detect infrared light signals. Here, Mg2Si/Si heterojunction photodetectors (PDs), which possess the advantages of low-cost, easy process, environmental friendliness, and compatibility with silicon CMOS technology, have been reported with a broadband spectral response as tested from 532 to 1550 nm under zero-bias. When the incident light wavelength is 808 nm, the Mg2Si/Si photodetector (PD) has a responsivity of 1.04 A W-1and a specific detectivity of 1.51 × 1012Jones. Furthermore, we find that the Ag nanoparticles (Ag_NPs) assembled on the Mg2Si layer can greatly improve the performance of the Mg2Si/Si PD. The responsivity and specific detectivity of Mg2Si/Si device with Ag_NPs under 808 nm illumination are 2.55 A W-1and 2.60 × 1012Jones, respectively. These excellent photodetection performances can be attributed to the high-quality of our grown Mg2Si material and the strong built-in electric field effect in the heterojunction, which can be further enhanced by the local surface plasmon effect and local electromagnetic field induced by Ag_NPs. Our study would provide significant guidance for the development of new self-powered infrared PDs based on silicon materials." @default.
- W4200577757 created "2021-12-31" @default.
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- W4200577757 date "2021-12-22" @default.
- W4200577757 modified "2023-10-16" @default.
- W4200577757 title "High-performance broadband photoresponse of self-powered Mg<sub>2</sub>Si/Si photodetectors" @default.
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- W4200577757 doi "https://doi.org/10.1088/1361-6528/ac3f53" @default.
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