Patent ID: 8815735
Filing Date: 2014-08-26
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising the steps of: forming a plurality of pairs of digit lines and a plurality of pairs of word lines in a substrate, wherein the digit lines are formed below the word lines; forming a plurality of silicon pillars in the substrate, wherein each silicon pillar couples with a corresponding pair of word lines and a corresponding pair of digit lines; forming a dielectric layer on the silicon pillar; forming a contact hole on the dielectric layer corresponding to the silicon pillar; performing a selective epitaxial growth process to form a silicon layer on the silicon pillar, wherein the selective epitaxial growth process is performed at a temperature of from 800 to 900 degrees Celsius under a pressure of from 60 Torr to 100 Torr, with introduction of DCS (SiH filling the contact hole from the silicon layer by a silicon material.