Patent ID: 6281561
Filing Date: 2001-08-28
Classification: H01L,Y02E

Abstract:
A four-contact multicolor sensor comprising:a transparent front contact turned toward an incident light source;a first diode function of microcrystalline or amorphous silicon following said transparent front contact and structured to absorb short wavelengths of said incident light;a second diode function of microcrystalline or amorphous silicon following said first diode function and structured to absorb intermediate wavelengths of said incident light;a third diode function of microcrystalline or amorphous silicon following said second diode function and structured to absorb long wavelengths of said incident light, said first, second and third diode functions being integrated into a stack with further contacts between said first diode function and said second diode function and between said second diode function and said third diode function, each of said diode functions including a p-i-n or n-i-p sequence; anda back contact following said third diode function whereby three color signals can be read out in parallel across said contacts.