Patent ID: 8723018

Claim:
A solar cell, comprising: a substrate of a first conductive type; an emitter layer of a second conductive type opposite the first conductive type on a front face of the substrate; at least one first electrode on the emitter layer and electrically connected to the emitter layer; a passivation layer on a rear face of the substrate, the passivation layer including a plurality of exposing portions to expose respective portions of the substrate; and an electrode conductive layer on the passivation layer, the electrode conductive layer including a plurality of second electrodes electrically connected to the substrate through the respective plurality of exposing portions, wherein the plurality of exposing portions include a first exposing portion inclined to the passivation layer, a second exposing portion inclined to the passivation layer, and a third exposing portion positioned between the first exposing portion and the second exposing portion, and wherein an inclined angle of the plurality of exposing portions to the passivation layer decreases toward the second exposing portion from the first exposing portion.