Patent ID: 6300212
Filing Date: 2001-10-09
Classification: C23C,H01L

Abstract:
A method for manufacturing a semiconductor device which has a capacitor including a layered structure of a lower electrode layer, a ferroelectric layer made of a composite metal oxide and an upper electrode layer in a predetermined region on a semiconductor substrate, comprising:forming said lower electrode layer above a semiconductor substrate in a lower electrode forming apparatus;transferring said semiconductor substrate from said lower electrode forming apparatus to a ferroelectric layer forming apparatus;forming said ferroelectric layer on said lower electrode layer in said ferroelectric layer forming apparatus;transferring said semiconductor substrate from said ferroelectric layer forming apparatus to an upper electrode forming apparatus without exposing to air; andforming said upper electrode layer on said ferroelectric layer in said upper electrode forming apparatus,wherein, at least in duration after forming said ferroelectric layer and until starting forming said upper electrode layer, a gas is introduced into the atmosphere in the vicinity of said substrate to keep the atmosphere within a predetermined pressure range.