Patent ID: 7723770

Claim:
An integrated circuit capacitor, comprising: lower and upper capacitor electrodes; and a capacitor dielectric layer extending between said lower and upper capacitor electrodes, said capacitor dielectric layer comprising a composite of a first dielectric layer extending directly on said lower capacitor electrode, a second dielectric layer extending directly on said upper capacitor electrode and an electrically insulating crystallization inhibiting layer extending between the first and second dielectric layers, said electrically insulating crystallization inhibiting layer having a higher crystallization temperature characteristic relative to the first and second dielectric layers and a thickness less than respective thicknesses of the first and second dielectric layers; wherein said lower and upper capacitor electrodes are formed of titanium nitride, tantalum nitride or tungsten nitride; wherein the electrically insulating crystallization inhibiting layer is formed of Al 2 O 3 or AlN; and wherein the first and second dielectric layers are formed of ZrO 2 .