Patent ID: 7635637
Filing Date: 2009-12-22
Classification: H01L

Abstract:
1. A method of transferring semiconductor structures from an initial substrate to a base substrate, the method comprising: providing an initial substrate with an etch stop layer; providing a doped silicon layer on the etch stop layer; after providing the doped silicon layer on the etch stop layer, forming a semiconductor layer over the doped silicon layer; forming semiconductor structures comprising one or more p-n junctions at least partially within the semiconductor layer using layering, patterning, and doping steps, wherein the semiconductor structures, semiconductor layer, doped silicon layer, etch stop layer, and initial substrate form an intermediate semiconductor processing structure; supporting the intermediate semiconductor processing structure with a removable support structure; removing the initial substrate using a substrate removal process that removes the initial substrate up to the etch stop layer; removing the etch stop layer with a chemical etching process; depositing a substrate material on the doped silicon layer to form a base substrate; and removing the removable support structure.