Solar cell and method fabricating the same

摘要

A solar cell according to an embodiment includes a pattern layer arranged on a substrate and including a uneven pattern; a back electrode arranged on the pattern layer; a light absorption layer arranged on the back electrode; a buffer layer on the light absorption layer; and a front layer arranged on the buffer layer.;The method fabricating a solar cell according to an embodiment includes forming a pattern layer including a uneven pattern on a substrate; forming a back electrode on the pattern layer; forming a light absorption layer on the back electrode; forming a buffer layer on the light absorption layer; and forming a front electrode on the buffer layer.

主权项

1. A solar cell, comprising:
a pattern layer arranged on a substrate and including an uneven pattern on the entire surface of the substrate, wherein the pattern layer is formed of a different material than the substrate is; a back electrode arranged on the pattern layer; a light absorption layer arranged on the back electrode, wherein a portion of the light absorption layer is formed on and in direct physical contact with the uneven pattern of the pattern layer; a buffer layer arranged on the light absorption layer; and a front electrode arranged on the buffer layer; wherein the pattern layer comprises a resin material comprising at least one material selected from the group consisting of epoxy, epoxy melanin, acrylic, and urethane resin, wherein the pattern layer comprises a flat bottom surface; wherein the entire flat bottom surface of the pattern layer has a uniform distance from an entire top surface of the light absorption layer; wherein the pattern layer comprises grooves and protrusions in the uneven pattern on a top surface thereof, and wherein the portion of the light absorption layer in direct physical contact with the uneven pattern of the pattern layer is in direct physical contact with at least one groove and at least one protrusion of the uneven pattern.