Tri-colorimetric detector in silicon with one photodiode

Summary form only given. A technique is described that has been developed and implemented in silicon to independently program the long- and the short-wavelength response of a photodiode in order to have a tri-colorimetric response using only one diode without dyed filters by switching between reverse voltages. A switching sequence has been designed to identify the three primary colors. Short-circuiting of both junctions gives a high sensitivity to green light, as this light is absorbed close to the junction