Patent ID: 6235649
Filing Date: 2001-05-22
Classification: C23C,H01L

Abstract:
A method of forming a high dielectric constant BST thin film having a conformal coverage of about at least 80% for aspect ratio D/W of at least 3, comprising the steps of:dissolving a Ba material including a dipivaloylmethanate organic barium compound (Ba(DPM).sub.2), an Sr material including a dipivaloylmethanate organic strontium compound (Sr(DPM).sub.2) and a Ti material including a bis (t-butoxy) bis (dipivaloylmethanate) titanium (Ti(t-BuO).sub.2 (DPM).sub.2) mixed with another Ti-.beta.-diketone complex in an organic solvent to obtain a solution material;vaporizing said solution material to obtain material gas; andforming a (Ba,Sr)TiO.sub.3 thin film on a substrate by CVD reaction using said material gas;wherein said Ti material including said bis (t-butoxy) bis (dipivaloylmethanate) titanium is mixed with another Ti-.beta.-diketone complex.