Patent ID: 7294553

Claim:
A method for producing a metal-insulator-metal (MIM) capacitor, the method comprising: forming a first electrically conductive capacitor layer of the MIM capacitor on a substrate; forming a silicon nitride capacitor insulator layer of the MIM capacitor on the first electrically conductive layer using a plasma-enhanced chemical vapor deposition process in a process chamber, in which silane, ammonia and nitrogen are used as precursors, a silane-to-ammonia flow rate ratio is between 1:20 and 6:5, a silane-to-nitrogen flow rate ratio is between 1:40 and 3:5, and a pressure in the process chamber is between 260 Pa and 530 Pa so that a desired, predeterminable stoichiometry with an increased silicon content is obtained in the silicon nitride layer thereby increasing the dielectric constant of the silicon nitride layer; and forming a second electrically conductive capacitor layer of the MIM capacitor on the silicon nitride layer.