Patent ID: 6316307
Filing Date: 2001-11-13
Classification: H01L

Abstract:
A method of forming a capacitor on a semiconductor substrate comprising the steps of:forming a lower electrode on a semiconductor substrate;performing a surface-treatment process to prevent a natural oxide layer from generating on the surface of the lower electrode;forming a TaON layer on the upper part of the surface-treated lower electrode by a reaction of Ta chemical vapor, O.sub.2 gas and NH.sub.3 gas;crystallizing the TaON layer; andforming an upper electrode on the upper part of the TaON layer,wherein the TaON layer is formed in a low pressure chemical vapor deposition(LPCVD) chamber equipped with a shower head injecting Ta chemical vapor, O.sub.2 gas and NH.sub.3 gas on an upper part thereof and at a temperature of 300 to 600.degree. C. with pressure of 0.1 to 10 Torr.