Publications by authors named "Mengqi Che"

Background: High red meat consumption is a main modifiable risk factor for colorectal cancer mortality (CRC), but its attributable disease burden remains unclear in China. We aimed to analyze the temporal trends in CRC deaths and disability-adjusted life years (DALYs) attributable to high red meat consumption in China from 1990 to 2021 and to predict the disease burden in the next 15 years.

Methods: Data was obtained from the Global Burden of Disease (GBD) 2021 study.

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In this research, we introduce a PdSe/2H-MoTe heterojunction photodetector that exhibits both broadband self-powered photodetection and linear/circular polarization detection capabilities. It has a broad spectral response range (covering 375-2200 nm) and reaches a peak sensitivity at 532 nm, exhibiting a notable responsivity of 7.3 × 10 A/W and a substantial specific detectivity of 8.

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Broadband photodetectors have drawn intensive attention owing to their wide application prospects in optical communication, imaging, astronomy, and so on. Two-dimensional transition-metal dichalcogenides (TMDs) are considered as highly potential candidates for photodetection applications, benefiting from their excellent photoelectric properties. However, most of the photodetectors based on TMDs suffer from low performance in the near-infrared (NIR) region due to the weak optical absorption efficiency near their absorption band edge, which severely constrains their usage for broadband optoelectronics.

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Article Synopsis
  • Two-dimensional (2D) semiconductors like PtSe have potential in next-gen electronics due to their favorable properties, but their performance is hindered by strong Fermi level pinning (FLP) effects at metal contacts.
  • The study investigates how different metal electrodes interact with PtSe, noting that certain metals create significant interfacial dipoles and Schottky barriers, affecting electron transfer efficiency.
  • Introducing a buffer layer of -BN can reduce the FLP effect and switch the contact type to p-type for specific metal contacts, aiding in the design of better 2D semiconductor devices.
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