working principles of led,photo diode, solarcells
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A photodiode is one type of light detector, used to convert the light into current or voltage based on the mode of operation of the device. Under forward bias condition, conventional current will flow from the anode to the cathode, following the arrow in the diode symbol. Photocurrent flows in the reverse direction.
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Hey friend here is your answer
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The working principle of a photodiode is, when a photon of ample energy strikes the diode, it makes a couple of an electron-hole. This mechanism is also called as the inner photoelectric effect. ... The entire current through the diode is the sum of the absence of light and the photocurrent.
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