Patent ID: 8987038
Filing Date: 2015-03-24
Classification: H01L,Y02E,Y02P

Abstract:
1. A method for forming a solar cell with selective emitters, comprising: providing a substrate; forming a first texture structure on a first surface of the substrate; forming a barrier layer on the first surface of the substrate; selectively removing a portion of the barrier layer to form an opening exposing the substrate, wherein a portion of the substrate under the barrier layer is a first region and another portion of the substrate under the opening of the barrier layer is a second region; performing a second texture etching process to the substrate to form a second texture structure in the second region under the opening of the barrier layer, wherein the first texture structure and the second texture structure comprise a plurality of protruding portions and recessing portions, and the distance between neighboring protruding portions of the first texture structure is L removing the barrier layer; performing a doping process to the substrate to form a first doping region in the first region and form a second doping region in the second region of the substrate; and forming an electrode on the second doping region.