Transparent solar cell for an electronic device and method for manufacturing said solar cell

A solar cell that is part of an electronic device, wherein the solar cell comprises:

• a substrate made of a transparent material to be exposed to incident light,
• a first electrode made of transparent electrically conductive material, formed on one face of the substrate and comprising an inner face opposite an outer face oriented towards the substrate, said inner face comprising a first portion and a second portion, the first portion having a roughness greater than a roughness of a second portion of the inner face, wherein the second portion of the inner face of the first electrode has a polished surface finish configured to transmit the incident light without scattering,
• an absorbent layer extending by an outer face over the first portion of the inner face of the first electrode, and
• a second electrode made of an electrically conductive material and extending over an inner face of the absorbent layer opposite the outer face of the absorbent layer,
• the absorbent layer and the second electrode being perforated so as to delimit a plurality of blind cavities, with the first electrode not being perforated, wherein a bottom of each blind cavity of the blind cavities is formed by the second portion of the inner face of the first electrode having the roughness different from that of the first portion.