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A 3D-photodetecting structure with adjustable sensitivity ratio in the ultra violet (UV) to visible (VIS) range is presented. The device is aimed for spectroscopic sensor applications. It consists of two photodiodes, silicon (Si), and silicon carbide (SiC), and an electronic circuit with switchable gains. The SiC photodiode is mounted in the centre of the Si photodiode. The SiC photodiode electronic...