Patent ID: 6190925
Filing Date: 2001-02-20
Classification: C23C,H01L,Y10S

Abstract:
In a lead germanium oxide (PGO) film, a method for epitaxially growing a PGO film on a semiconductor wafer, the method comprising the steps of:a) mixing and to form a PGO mixture having a molar ratio in the range of approximately 4.5:3 to 5.5:3;b) dissolving the mixture of Step a) with a solvent of tetrahydrofuran, isopropanol, and tetraglyme to form a precursor solution;c) from the solution formed in Step b), creating a precursor gas;d) decomposing the precursor gas formed in Step c) on the wafer; ande) epitaxially growing a PGO film, including a first phase of Pb.sub.5 Ge.sub.3 O.sub.11, whereby a homogeneous film with ferroelectric characteristics is formed.