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    SiC tagged posts

    Umbrella for Atoms: The First Protective Layer for 2D Quantum materials

    March 5, 2024, Categories  Physics

    Schematic representation showing how a graphene layer protects against water. The electrical current flowing along the edge of the topological insulator indenene remains completely unaffected by external influences. (Image: Jörg Bandmann, pixelwg)

    As silicon-based computer chips approach their physical limitations in the quest for faster and smaller designs, the search for alternative materials that remain functional at atomic scales is one of science’s biggest challenges. In a groundbreaking development, researchers have engineered a protective film that shields quantum semiconductor layers just one atom thick from environmental influences without compromising their revolutionary quantum properties...

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    Protons Fix a Long-Standing Issue in Silicon Carbide Electronics

    December 1, 2022, Categories  Technology/Electronics

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    Proton implantation prevents the expansion of stacking faults and solves the problem of bipolar degradation.
    Electroluminescence images of PiN diodes made from silicon carbide after being subjected to electrical stress. In the first diode (a), on which proton implantation was not applied, expanded stacking faults show up as dark regions. The other three diodes (b, c, and d) undergo proton implantation at increasing hydrogen ion doses. Contrary to the first diode, these exhibit no stacking fault expansion and, in turn, bipolar degradation.
    Image credit: Masashi Kato from Nagoya Institute of Technology

    Silicon carbide (SiC) is a promising semiconductor material for power electronic devices, but it suffers from bipolar degradation, which severely limits its lifespan...

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