Patent ID: 8569615

Claim:
A solar cell comprising: a substrate; an anti-reflection layer on the substrate; a first electrode on the anti-reflection layer; a photo-electro conversion layer on the first electrode; and a second electrode on the photo-electro conversion layer, wherein: the anti-reflection layer comprises a nanopattern and a nanostructure, and the anti-reflection layer is disposed between the substrate and the first electrode, such that a lower surface of the nanopattern comes in contact with the substrate, the nanostructure is disposed on an upper surface of the nanopattern; the nanopattern comprises a transparent conductive oxide; the nanostructure comprises a nanoparticle layer; the nanoparticle layer includes a plurality of nanoparticles that are covered by and come in contact with the first electrode; and the nanoparticle layer comprises different material from the nanopattern.