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Complementary Metal-Oxide-Semiconductor (CMOS) Sensor
Working Principle
This image shows how a photodector works. The photon penetrates the silicon and create a electron-helo combination. The photonic penetration depth on silicon, i.e., the light absorption, depends on the wavelength. This means that the longer the wavelength λ [m] of a photon, the loweris its energy, and the further it can delve into silicon. 1)
Discussion