The dielectric cap layer 264 and insulative spacers 266 are generally an insulating material, such as silicon oxide, silicon nitride or silicon oxynitride, and may include more than one insulating material. [0043] In one embodiment, each storage capacitor 107 is a stacked container capacitor as shown in FIG. 2, having a conductive bottom electrode 274, a dielectric layer 276 and a conductive top e