Imaging Device with Filtering of the Infrared Radiation

A method for filtering comprising:

• generating electrons at a first semiconductor junction in a substrate;
• generating electrons at a second semiconductor junction in the substrate, the second semiconductor junction arranged vertically in line with the first semiconductor junction;
• and
• applying a continuous polarizing voltage at the second semiconductor junction so that electrons generated at the second semiconductor junction cannot be sensed.

A method of filtering comprising:

• sensing, during a sense mode, electrons generated at a first semiconductor junction in a substrate;
• filtering, during the sense mode, electrons generated at a second semiconductor junction in the substrate, wherein the second semiconductor junction is vertically aligned with the first semiconductor junction;
• and
• removing, during a reset mode, electrons generated at the first semiconductor junction.