Patent ID: 6214661
Filing Date: 2001-04-10
Classification: H01L

Abstract:
In a method of forming a microelectronic structure of a Pt/BSTO/Pt capacitor stack for use in a DRAM device, the improvement comprising substantially eliminating or preventing oxygen out-diffusion from the BSTO material layer, comprising:a) preparing a bottom Pt electrode formation;b) subjecting said bottom Pt electrode formation to an oxygen plasma treatment to form an oxygen enriched Pt layer on said bottom Pt electrode;c) depositing a BSTO layer on said oxygen enriched Pt layer;d) depositing an upper Pt electrode layer on said BSTO layer;e) subjecting said upper Pt electrode layer to an oxygen plasma treatment to form an oxygen incorporated Pt layer; andf) depositing a Pt layer on said oxygen incorporated Pt layer upper Pt electrode.