Design and Evaluation of Filterless RGB Sensor on Standard CMOS Process

In this study, a color detection phenomenon that does not utilize filters is evaluated via the standard CMOS process. The device comprises multiple pn-junctions stacked in depth direction, which enable division of light responses by different absorptions with respect to wavelength. To eliminate filters, we use rectifiers cut reverse currents corresponding long-wavelength infrared (Ir) regions. Numerical simulations predict dynamic range sensor as 160 dB after removal can decrease value. Applications based on Internet Things be realized mass production at low cost eliminating additional processes required form conventional front sensor. We evaluate proposed both numerical simulation and experiment well clarify sensing requires sufficient PWell thickness separate depletion regions for successful operation. appropriate process parameters are revealed, providing useful information testing under wide conditions.