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photodiode
(redirected from Silicon photodiode)

    Also found in: Wikipedia, Hutchinson 0.01 sec.

photodiode

A light sensor (photodetector) that allows current to flow in one direction from one side to the other when it absorbs photons (light). The more light, the more the current. Used to detect light pulses in optical fibers and other light-sensitive applications, it works the opposite of a light emitting diode (see LED). The photodiode detects light and creates a conductive path that allows electricity to flow. The LED receives electricity and emits light.

Solar Cells Are Photodiodes
Solar cells are photodiodes that are chemically treated (doped) differently than the photodiode used as a switch or relay. When solar cells are struck by light, their silicon material is excited to a state where a small electrical current is generated. Huge arrays of solar cell photodiodes are required to power a house. See photocell and phototransistor.

photodiode [¦fōd·ō′dī‚ōd]
(electronics)
A semiconductor diode in which the reverse current varies with illumination; examples include the alloy-junction photocell and the grown-junction photocell. Also known as photoconductor diode.


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Its focus was on light-sensing silicon photodiode chips used in X-ray medical diagnostic machines.
Airport security scanner could give boost to firm by Greenberg, David / Los Angeles Business Journal
For this comparison, the artifacts were two silicon photodiode trap detectors.
Comparison of Two Cryogenic Radiometers at NIST by Livigni, David J. / Journal of Research of the National Institute of Standards and Technology
Avago's ambient light sensors out perform silicon photodiode light-detection solutions because their spectral response peaks at the same wavelength as the human eye.
Avago Technologies Introduces Low-Cost Ambient Light Photo Sensor for ... by Business Wire
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