摘要:
Capacitor in a semiconductor device suitable for diffusion prevention between a lower electrode and a polysilicon and oxidation prevention of a barrier metal layer and a method for manufacturing the same are disclosed. The capacitor in a semiconductor device includes a semiconductor substrate, an insulating layer having a contact hole on the substrate, a plug formed in the contact hole, a first barrier layer on the plug, a second barrier layer on the first barrier layer, a lower electrode on the second barrier layer, a dielectric layer on the lower electrode, and an upper electrode on the dielectric layer.