Patent ID: 8658884
Filing Date: 2014-02-25
Classification: H01L,Y02E,Y02P

Abstract:
1. A solar cell comprising: a p-n junction structure having a first conductive silicon substrate, a second conductive silicon substrate positioned on a front side of the first conductive silicon substrate and having a conduction opposite to the first conductive silicon substrate, and a p-n junction formed at an interface between the first conductive silicon substrate and the second conductive silicon substrate; an anti-reflection layer formed on a front side of the second conductive silicon substrate; a backside passivation layer positioned on a rear side of the first conductive silicon substrate and containing at least one of HfSi a reflection film positioned on the backside passivation layer and containing at least one of HfO a front electrode connected to the second conductive silicon substrate through the anti-reflection layer; and a rear electrode connected to the first conductive silicon substrate through the reflection film and the backside passivation layer, wherein the reflection film is thicker than the backside passivation layer.