Patent ID: 8338209

Claim:
A method for making a photovoltaic cell, the method comprising: providing a donor wafer doped to a first conductivity type; doping a first surface of the donor wafer to a second conductivity type opposite the first conductivity type; defining a cleave plane within the donor wafer; affixing the first surface of the donor wafer to a receiver element wherein a reflective metal layer is disposed between the receiver element and the donor wafer; cleaving a semiconductor lamina from the donor wafer at the cleave plane wherein the semiconductor lamina remains affixed to the receiver element, and the lamina comprises a second surface opposite the first surface; and completing fabrication of the photovoltaic cell, wherein the photovoltaic cell comprises the semiconductor lamina; wherein the first surface comprises an emitter region of the photovoltaic cell, and wherein the second surface is a light facing surface of the lamina.