Patent ID: 9328427
Filing Date: 2016-05-03
CPC Classification: C25D,H01L,Y02E

Claim Text:
1. A method of plating a metal layer on a solar cell, the solar cell having a front side configured to face the sun during normal operation, a back side opposite the front side, and four side edges, the method comprising: plating a first metal layer on a solar cell, wherein the solar cell comprises a seed metal layer on a silicon substrate, wherein plating a first metal layer comprises conducting a first current through a seed metal layer of the solar cell using a metal electrode in an electroplating bath, wherein the first current is conducted in a first direction, at a first voltage and for a first time; ejecting metal from the first metal layer by conducting a second current through the solar cell in a second direction, at a second voltage and at a second time; and subsequent to the ejecting metal from the first metal layer, plating additional metal to the first metal layer by conducting a third current at a third voltage for a third time in the first direction.