Patent ID: 6165556
Filing Date: 2000-12-26
Classification: C23C,H01L,Y10S

Abstract:
A method for forming a high dielectric constant thin film, said method comprising the steps of:dissolving, respectively, in an organic solvent, each of a Ba dipivaloylmethanato compound serving as a Ba source material, a Sr dipivaloylmethanato compound serving as a Sr source material, and a Ti dipivaloylmethanato compound serving as Ti source material, to provide dissolved Ba, Sr, and Ti source materials;determining material flow rates, including a Ba flow rate for said dissolved Ba source material, a Sr flow rate for said dissolved Sr source material, and a Ti flow rate for said Ti source material;obtaining a solution comprising said dissolved Ba, Sr, and Ti source materials according to said material flow rates; andforming a first barium strontium titanate (Ba, Sr) TiO.sub.3 film by chemical vapor deposition (CVD) using said solution;wherein a ratio of said Ti flow rate to a sum of said Ba flow rate and said Sr flow rate is increased during said first film forming step.