Patent ID: 8704084
Filing Date: 2014-04-22
Classification: H01L,Y02E,Y02P

Abstract:
1. A multiple-junction photoelectric device comprising a substrate on which a first conducting layer is deposited, at least two elementary photoelectric devices of n-i-p or n-p configuration, on which a second conducting is deposited, and at least one intermediate layer provided between two adjacent elementary photoelectric devices, wherein said intermediate layer has, on the incoming light side, an top face and, on the other side, a bottom face, said bottom face having a peak to valley roughness greater than 150 nm, and wherein said top and bottom faces have respectively a surface morphology comprising inclined elementary surfaces such that α 90bottom is smaller than α 90top by at least 3°, where α 90top is the angle for which 90% of the elementary surfaces of the top face of the intermediate layer have an inclination equal to or less than this angle, and α 90bottom is the angle for which 90% of the elementary surfaces of the bottom face of the intermediate layer have an inclination equal to or less than this angle.