Patent ID: 7413949
Filing Date: 2008-08-19
Classification: H01L,Y10T

Abstract:
1. A method for fabricating a capacitor, comprising the steps of: forming a laminated structure on a semiconductor substrate, the laminated structure including a bottom electrode, a capacitor insulating film formed on the bottom electrode, and a top electrode formed on the capacitor insulating film, the capacitor insulating film being composed of a ferroelectric film or a high dielectric constant film containing an element absorbing hydrogen; and subjecting the capacitor insulating film to heat treatment to crystallize the ferroelectric film or the high dielectric constant film and place the element absorbing hydrogen in grain boundaries, inter-lattice positions or holes of the ferroelectric film or the high dielectric constant films, wherein the element absorbing hydrogen is a different element from an element constituting the ferroelectric film or the high dielectric constant film.