Patent ID: 6303427
Filing Date: 2001-10-16
Classification: H01L

Abstract:
A method of manufacturing a capacitor in a semiconductor device comprising the steps of:forming an underlying tungsten electrode on a substrate in which an underlying structure is formed;forming a WO.sub.3 film on the surface of the underlying tungsten electrode, wherein said WO.sub.3 film is formed in thickness 10-30 .ANG. by processing the surface of the underlying tungsten electrode by an UV/O.sub.3 process performed at a temperature of 300-550.degree. C. for 2-5 minutes at a strength of 15-30 mW/cm.sup.2 ;forming a Ta.sub.2 O.sub.5 dielectric film on the WO.sub.3 film; andforming an upper electrode on the Ta.sub.2 O.sub.5 dielectric film.