Patent ID: 8975682
Filing Date: 2015-03-10
Classification: H01L

Abstract:
1. An integrated circuit comprising: a semiconductor substrate having a trench, the trench comprising sidewalls and a bottom; and at least one capacitor in the trench, the capacitor including first and second metal comprising electrodes, and a dielectric layer located between the first and second electrodes, wherein the first electrode of the capacitor comprises hemispherical grain silicon or hemispherical grain silicon alloy on the sidewalls and bottom of the trench, the hemispherical grain silicon or hemispherical grain silicon alloy being completely silicided, a surface of the completely-silicided hemispherical grain silicon or hemispherical grain silicon alloy of the first electrode directly contacts the dielectric layer of the capacitor, and the second electrode of the capacitor comprises at least surface-silicided hemispherical grain silicon or hemispherical grain silicon alloy.