Patent ID: 9059340
Filing Date: 2015-06-16
Classification: H01L,Y02E

Abstract:
1. A method of manufacturing a solar cell comprising the steps of: preparing a semiconductor substrate of first conductivity including forming a second semiconductor layer of the first conductivity substantially entirely on the principal surface inclusive of a surface of the insulation layer, removing a portion of the second semiconductor layer located on the insulation layer with a first etching agent whose etching rate is higher for the second semiconductor layer than for the insulation layer and thereby forming an opening, removing the insulation layer exposed through the opening with a second etching agent whose etching rate is higher for the insulation layer than for the second semiconductor layer while using the second semiconductor layer as a mask and thereby partially exposing the surface of the first semiconductor region, and forming electrodes electrically connected to the surface of the first semiconductor region and to a surface of the second semiconductor layer, respectively.