Patent ID: 6423989
Filing Date: 2002-07-23
Classification: H01L

Abstract:
A semiconductor device comprising:a Si substrate of a first conductive type; a first Si film of the first conductive type formed on the Si substrate; a SiGe film of a second conductive type formed on the first Si film; a second Si film of the second conductive type formed on the SiGe film; a third Si film of the first conductive type formed on the second Si film; a first electrode formed by removing a part of the third Si film or changing the conductive type of the part of the third Si film of the first conductive type to the second conductive type, and joining a metal terminal to a part of the second Si film exposed by removing the part of the third Si film or a part of the third Si film changed in conductive type; a second electrode formed by joining a metal terminal to the third Si film; and a third electrode formed by joining a metal terminal to a back surface of the Si substrate.