Patent ID: 6794241
Filing Date: 2004-09-21
Classification: H01L

Abstract:
A method for fabricating a capacitor in a semiconductor device, comprising the steps of:forming a lower electrode on a substrate; cleaning the lower electrode with use of HF and NH4OH; nitrifying the lower electrode through a NH3 annealing process; depositing a nitride layer on the nitridated lower electrode, wherein the deposition of the nitride layer is proceeded in the furnace at a temperature ranging from about 500Â° C. to about 800Â° C. and a pressure ranging from bout 0.1 Torr to from about 1 Torr for about 3 to 10 minutes, and wherein the deposition of the nitride layer is performed with NH3 gas and di-chloro-silen (DCS), wherein a ratio of NH3 gas:di-chloro-silen (DCS) is 3Ëœ10:1; and forming sequentially a dielectric material and an upper electrode on the nitride layer.