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photodiode

   Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson 0.03 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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However, what's most distinctive about the new photodiode is its short operating wavelength of 280 nanometers.
Light sensor may improve battlefield tools by Science News
The impedance multiplication concept with a positive feedback buffer amplifier was analyzed and utilized in a bootstrap PV transimpedance amplifier to measure photocurrent of a 200 [omega] shunt resistance photodiode with a maximum signal gain of [10.
Photocurrent Measurement of PC and PV Hg CdTe Detectors by Martin, Robert J. / Journal of Research of the National Institute of Standards and Technology
The company makes photodiodes and photodiode arrays.
IN BRIEF by Daily News (Los Angeles, CA)
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