Patent ID: 9082902
Filing Date: 2015-07-14
Classification: H01L,Y02E,Y02P

Abstract:
1. A solar cell, comprising: a substrate, wherein the substrate has a first surface and a second surface disposed opposite to the first surface, and the first surface is a light incident surface; a first lightly-doped region disposed adjacent to the second surface in the substrate; a first heavily-doped region disposed adjacent to the second surface in the substrate, wherein the first lightly-doped region and the first heavily-doped region have a first doped type; a second heavily-doped region, disposed adjacent to the second surface in the substrate, wherein the second heavily-doped region has a second doped type opposite to the first doped type; a first patterned doped stacked structure disposed on the second surface of the substrate and corresponding to the first lightly-doped region, wherein the first patterned doped stacked structure exposes the first heavily-doped region and the second heavily-doped region, the first patterned doped stacked structure comprises a first dielectric layer, a first doped layer and a second dielectric layer, wherein the first dielectric layer, the first doped layer and the second dielectric layer are mutually stacked; a second doped layer disposed on the first patterned doped stacked structure and the second surface in the substrate, wherein the second doped layer exposes a portion of the first heavily-doped region and a portion of the second heavily-doped region; a first electrode electrically connected to the first heavily-doped region exposed by the first patterned doped stacked structure and the second doped layer; and a second electrode electrically connected to the second heavily-doped region exposed by the first patterned doped stacked structure and the second doped layer.