Patent ID: 7608517

Claim:
A method for forming a capacitor of a semiconductor device, which comprises the steps of: forming a storage electrode on a semiconductor substrate; forming a dielectric layer formed of Ti (1-x) Tb x O on the storage electrode; forming a plate electrode on the dielectric layer formed of Ti (1-x) Tb x O; and wherein the dielectric layer of Ti (1-x) Tb x O is formed through one of pulsed chemical vapor deposition and low pressure chemical vapor deposition using an organic metallic composition containing Ti as a precursor and using an organic metallic composition containing Tb as a precursor, wherein the organic metallic composition containing Ti and the organic metallic composition containing Tb are each used as precursors during the same pulsed chemical vapor deposition or low pressure chemical vapor deposition process, and wherein the dielectric layer formed of Ti (1-x) Tb x O is formed to have a mixed phase.