Patent ID: 7407897

Claim:
A method of manufacturing a capacitor of a semiconductor device comprising: forming a first interlayer insulator on a semiconductor substrate and planarizing the first interlayer insulator; forming a lower electrode on the first interlayer insulator; forming a lower dielectric film having a negative quadratic VCC on the lower electrode in situ using a plasma enhanced atomic layer deposition (PEALD) process; forming an intermediate dielectric film having a positive quadratic VCC on the lower dielectric film in situ using a PEALD process; forming an upper dielectric film having a negative quadratic VCC on the intermediate dielectric film in situ using a PEALD process, wherein the PEALD process used to form the lower dielectric film and the upper dielectric film in situ uses a source comprising hexachlorodisiloxane (HCDSO); forming an upper electrode on the upper dielectric film; patterning the upper electrode to expose a portion of the upper dielectric film; patterning a portion of the exposed upper dielectric film, intermediate dielectric film, and lower dielectric film to expose a portion of the lower electrode; and forming a second interlayer insulator on exposed portions of the upper electrode, upper dielectric film, and lower electrode.