Patent ID: 9196758
Filing Date: 2015-11-24
Classification: H01L,Y02E,Y02P

Abstract:
1. A back contact solar cell, comprising: a substrate having a light-receiving surface and a back surface; a first polycrystalline silicon emitter region of a first conductivity type disposed on a first thin dielectric layer disposed on the back surface of the substrate; a second polycrystalline silicon emitter region of a second, different, conductivity type disposed on a second thin dielectric layer disposed on the back surface of the substrate; a third thin dielectric layer disposed laterally directly between the first and second polycrystalline silicon emitter regions; a first conductive contact structure disposed on the first polycrystalline silicon emitter region; and a second conductive contact structure disposed on the second polycrystalline silicon emitter region, wherein the second polycrystalline silicon emitter region and the second thin dielectric layer are disposed in a recess disposed in the substrate and the first polycrystalline silicon emitter region overlaps the second polycrystalline silicon emitter region.