Patent ID: 9196483
Filing Date: 2015-11-24
Classification: H01L

Abstract:
1. A fabricating method of a carrier channel with an element concentration gradient distribution, comprising: providing a substrate; forming a first isolation layer having a first through hole on the substrate; forming a stacking layer on the first isolation layer, wherein the stacking layer is filled into the first through hole and contacts with the substrate; forming a second isolation layer on the stacking layer; defining a transfer pattern on the second isolation layer by a photolithographic etching process, wherein the second isolation layer having the transfer pattern is a hard mask; transferring the transfer pattern onto the stacking layer by a selective etching process and the hard mask; forming a third isolation layer on the substrate, wherein the third isolation layer covers the first isolation layer, the stacking layer, and the hard mask; and executing a rapid melting growth process for crystallizing the stacking layer into the carrier channel from a contact surface between the stacking layer and the substrate, wherein the carrier channel has the element concentration gradient distribution.