Semiconductor light detection device and method of detecting light of specific wavelength
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United States of America
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Dec 28, 2021
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Apr 4, 2019
app pub date -
Sep 28, 2018
filing date -
Sep 28, 2018
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Abstract
Provided is a semiconductor light detection device having a relatively high detection sensitivity to a light component of a specific wavelength. The semiconductor light detection device includes: a semiconductor light receiving element, in which a first conductive layer is formed on a surface of a semiconductor substrate, a second conductive layer is formed below the first conductive layer, a third conductive layer is formed below the second conductive layer, and a photocurrent based on the intensity of incident light is output from the third conductive layer while an input voltage is applied to the first conductive layer; and a semiconductor detection circuit configured to output an output voltage based on a current difference between a first photocurrent and a second photocurrent being output in response to the application of the first input voltage and the second input voltage, respectively.
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