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PI Physik Instrumente - Revolution In Photonics Align LW LB 3/24

Infrared Detection at Room Temperature with Single-Electron Resolution

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Lauren I. Rugani

Infrared signals with wavelengths longer than 1.2 μm often are excluded by the selectivity of silicon-based sensors. Sensors that use electron-hole pair generation require photons to have energy greater than the 1.1-eV bandgap energy of silicon, which only corresponds to wavelengths in the visible region. Other methods require low-temperature operation. A scanning electron microscopy image shows (from right to left) the electron reservoir, an energy barrier formed by the lower gate and a storage node, where injected electrons are read out as current. The schematics show that no...Read full article

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    Published: August 2007
    Glossary
    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.
    scanning electron microscopy
    Scanning electron microscopy (SEM) is an advanced imaging technique used in microscopy to obtain high-resolution, three-dimensional images of the surfaces of solid specimens. SEM achieves this by using a focused beam of electrons to scan the specimen's surface, resulting in detailed images with magnifications ranging from about 10x to 100,000x or higher. Key features and principles of scanning electron microscopy include: Electron beam: SEM uses an electron beam instead of visible light for...
    electron reservoirenergy barrierFeaturesMicroscopynanoscanning electron microscopySensors & Detectors

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