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Strain Engineering of 2D Materials Enables More Effortless Photodetection

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Using a 2D material and an approach it calls “strainoptronics,” a George Washington University research team created a photodetector that can operate with high efficiency at the wavelength of 1550 nm, a spectral region that offers low-loss transmission and optical gain. The researchers stretched an ultrathin layer of molybdenum telluride on top of a nanoscale silicon photonic waveguide. Using strain engineering, they altered the physical properties of the 2D material to shrink the electronic bandgap. This approach allowed the device to operate at near-infrared wavelengths...Read full article

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    Published: July 2020
    Glossary
    optoelectronics
    Optoelectronics is a branch of electronics that focuses on the study and application of devices and systems that use light and its interactions with different materials. The term "optoelectronics" is a combination of "optics" and "electronics," reflecting the interdisciplinary nature of this field. Optoelectronic devices convert electrical signals into optical signals or vice versa, making them crucial in various technologies. Some key components and applications of optoelectronics include: ...
    integrated optics
    A thin-film device containing miniature optical components connected via optical waveguides on a transparent dielectric substrate, whose lenses, detectors, filters, couplers and so forth perform operations analogous to those of integrated electronic circuits for switching, communications and logic.
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    optical communications
    The transmission and reception of information by optical devices and sensors.
    Research & TechnologyeducationGeorge Washington UniversityAmericasMaterialsOpticsoptoelectronicsstrain engineeringLight Sourcesphotodetectors2D materialssemiconductorssilicon photonicsintegrated opticsnanonanomaterialsoptical communicationsTech Pulse

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