Patent ID: 6281022
Filing Date: 2001-08-28
Classification: C23C,H01L

Abstract:
A method for forming a lead germanium oxide (PGO) film on an integrated circuit (IC) film comprising the steps of:a) mixing [Pb(thd).sub.2 ] and [Ge(ETO).sub.4 ] to form a PGO mixture having a first predetermined molar ratio;b) dissolving the mixture of Step a) with a solvent of tetrahydrofuran, isopropanol, and tetraglyme to form a precursor solution;c) heating the solution formed in Step b) to create a precursor gas;d) introducing the precursor vapor to the IC film; ande) decomposing the precursor gas formed in Step c) on the IC film to form a PGO film, having ferroelectric properties, including a first phase of Pb.sub.5 Ge.sub.3 O.sub.11 and a second phase of Pb.sub.3 GeO.sub.5, whereby the PGO film ferroelectric properties are improved with the addition of the second phase of PGO.