Patent ID: 9536939
Date: 2017-01-03
CPC Classifications: H01L

Claim:
1. A method of forming a semiconductor structure, said method comprising: forming an oxide material surrounding a plurality of silicon germanium alloy portions having a first germanium content, each of said silicon germanium alloy portions extending upwards from a surface of an insulator layer; performing a thermal condensation process to convert each silicon germanium alloy portion into a silicon germanium alloy fin having a second germanium content that is greater than said first germanium content; performing a planarization process to expose a topmost surface of each silicon germanium alloy fin and to form oxide fins located on each sidewall surface of each silicon germanium alloy fin, wherein at least one of said oxide fins directly contacts a sidewall surface of one of said silicon germanium alloy fins and a sidewall surface of another of said silicon germanium alloy fins; and replacing each silicon germanium alloy fin with a metal structure to provide a vertically orientated metal-insulator-metal (MIM) capacitor structure.