Patent ID: 8173495
Filing Date: 2012-05-08
Classification: H01L

Abstract:
1. A method of forming an apparatus comprising: forming an insulator layer on a semiconductor substrate, wherein the semiconductor substrate comprises a first material and the insulator layer comprises a second material, and wherein the second material is lattice-matched with the first material; forming a semiconductor layer on the insulator layer, wherein the semiconductor layer comprises one of the first material and a third material that is lattice matched with the second material; forming a contact attached to the semiconductor substrate; forming a source region in the semiconductor layer; forming a drain region in the semiconductor layer; and forming a well active region in the semiconductor layer, wherein the apparatus is configured such that when a first voltage is applied to the substrate while a second, different voltage is applied to the source region or the drain region, minority carriers in the well region flow through the insulator layer and the semiconductor substrate to the contact.