Patent ID: 7312091

Claim:
A method of forming a ferroelectric capacitor, comprising: providing a substrate on a susceptor; forming a lower electrode layer including an orientation-enhancing layer on the susceptor; providing a heated metal organic precursor gas into the substrate, wherein the metal organic precursor gas is heated through a vaporizer; providing a heated oxidizer gas into the substrate, wherein the oxidizer gas passes through a coil-shaped heater surrounding the susceptor and then is heated, separately from the heated metal organic precursor gas, wherein the heated metal organic precursor gas and the heated oxidizer gas are not pre-mixed; forming a plane oriented ferroelectric layer on the lower electrode layer by utilizing an MOCVD reaction between the heated metal organic precursor gas and the heated oxidizer gas; forming an upper electrode layer on the ferroelectric layer; and patterning the upper electrode layer, the ferroelectric layer and the lower electrode layer.