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

Claim 8:
9. A device comprising:
a fin structure disposed on a substrate, the fin structure including:
a first semiconductor portion extending from the substrate to a first height, the first semiconductor portion including a dopant at a first concentration; and
a second semiconductor portion formed of a first semiconductor material and extending along the first semiconductor portion to a second height above the substrate that is different from the first height, the second semiconductor portion interfacing with the first semiconductor portion and including the dopant; and
a doped layer disposed over and around the second semiconductor portion of the fin structure, the doped layer formed of a second semiconductor material that is different than the first semiconductor material, wherein the second semiconductor portion of the fin structure and the doped layer both include the dopant at a second concentration that is substantially uniform at any point of the second semiconductor portion and the doped layer of the fin structure, wherein the second concentration of the dopant is considered substantially uniform when doping concentrations at any defined number of points of the second semiconductor portion and the doped layer are within ±5% of each other, the second concentration of the dopant being different than the first concentration of the dopant.