Patent ID: 6300648
Filing Date: 2001-10-09
Classification: H01L

Abstract:
A sensor comprising:an intrinsic amorphous silicon layer;a transparent first electrode coupled to a first side of the intrinsic amorphous silicon layer;a metal back contact forming a metal mushroom layer coupled to a second side of the intrinsic amorphous silicon layer the metal back contact including a bottom conducting segment, two upright conducting segments, a first end of each upright conducting segment coupled to a corresponding end of the bottom conducting segment, each upright conducting segment oriented approximately perpendicular to the bottom conducting segment, at least one extension segment coupled to a second end of an upright conducting segment; anda doped amorphous silicon layer between the metal mushroom layer and the intrinsic amorphous silicon layer such that an area of the doped amorphous silicon layer is larger than an area of the metal back contact, the doped amorphous silicon layer prevents all direct contact between the intrinsic amorphous silicon layer and the metal back contact.