Patent ID: 6852136
Filing Date: 2005-02-08
Classification: H01L,Y10T

Abstract:
1. A method for manufacturing a tantalum oxy nitride capacitor comprising: forming a lower electrode on a surface of a semiconductor substrate using a material selected from the group consisting of undoped silicon, doped silicon and mixtures thereof; forming MPS (Metastable Poly Silicon) using gases each containing a silicon source after performing wet etching or dry etching of the lower electrode; performing a MPS doping in a chamber by using a mixed gas comprising phosphor (P); depositing a nitride film, in said chamber, depositing a tantalum oxy nitride thin film using a chemical vapor comprising tantalum on the nitride film; performing a nitrating or nitrifying of a surface of the tantalum oxy nitride thin film; and forming an upper electrode by stacking a metal layer on an upper portion of the tantalum oxy nitride thin film, wherein a gas comprising a silicon source is used in the forming of the MPS and said gas selected from the group consisting of SiH