Patent ID: 7781305
Filing Date: 2010-08-24
Classification: B81C,H01L,Y10S,Y10T

Abstract:
1. A method for forming multilayered substrates for solar cells, the method comprising: providing a donor substrate comprising an overlying a film of silicon material to be detached, the donor substrate having a cleave region formed within a vicinity of between the film of silicon material and a lower portion of the donor substrate; coupling a surface region of the film of silicon material from the donor substrate to a dielectric handle substrate; applying a voltage between the donor substrate including the film of silicon material and the dielectric handle substrate to induce bonding between the surface region of the film of silicon material and the dielectric handle substrate; and initiating a cleaving action to remove the film of silicon material using a cleave front propagating across the donor substrate from a first side to a second side to form a multi-layered substrate.