Patent ID: 9530711
Filing Date: 2016-12-27
CPC Classification: H01L

Claim Text:
1. A semiconductor structure, comprising: a substrate; a buried insulator layer on the substrate; an island of a semiconductor layer on the buried insulator layer; a substrate contact extending from a first area of the island to the substrate through the buried insulator layer; and a transistor in a second area of the island, wherein the substrate contact has a thermal conductivity that is greater than a thermal conductivity of the buried insulator layer; the substrate, the island, and the substrate contact are all composed of silicon and form a continuous silicon path extending from a channel of the transistor to the substrate; the substrate contact is electrically isolated from the transistor; a doped portion of the island electrically isolates the substrate contact from the transistor; the doped portion and an upper portion of the substrate contact are doped with a first type of impurity; a source region and a drain region of the transistor are doped with a second type of impurity that is different than the first type of impurity; and a lower portion of the substrate contact is undoped.