Patent ID: 11862713
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A device comprising:
a dielectric isolation structure disposed on a substrate;
a fin structure at least partially disposed within the dielectric isolation structure, the fin structure including;
a first semiconductor portion extending through the dielectric isolation structure to a height above the dielectric isolation structure;
a second semiconductor portion positioned over and around the first semiconductor portion of the fin structure;
a third semiconductor portion disposed over and around the second semiconductor portion of the fin structure, the third semiconductor portion formed of a different semiconductor material than one of the first semiconductor portion and the second semiconductor portion of the fin structure, wherein the second and third semiconductor portions of the fin structure include a dopant at a first concentration that is substantially uniform at any point of the second portion and the third semiconductor portion of the fin structure, wherein the first concentration of the dopant is considered substantially uniform when doping concentrations at any defined number of points of the second and third semiconductor portions are within ±5% of each other.