Patent ID: 8790948

Claim:
A method for manufacturing a solar cell, comprising: forming a first barrier layer, forming a second barrier layer, forming a first well layer disposed between the first barrier layer and the second barrier layer and containing Si, applying an energy density at 1.26 J/mm 2 or more and 28.8 J/mm 2 or less to the first well layer by irradiating light having an energy that is smaller than a band gap of the first well layer, forming a third barrier layer, forming a second well layer disposed between the second barrier layer and the third barrier layer, forming a first sub-cell connected with the first barrier layer, and forming a second sub-cell connected with the third barrier layer, wherein the first well layer is a p-type semiconductor and the second well layer is an n-type semiconductor, and wherein the energy density is applied to the first well layer after forming the first sub-cell and then the second sub-cell is formed when the heat conductivity of the first sub-cell is higher than the heat conductivity of the second sub-cell.