Patent ID: 6503314
Filing Date: 2003-01-07
Classification: C23C

Abstract:
A source solution for use in chemical vapor deposition processes comprising:a ferroelectric chemical vapor deposition precursor which is a combination of Pb(TMHD)2 and Ge(OEt)4 in a molar ratio of about 5:3 having a concentration of about 0.1 M/L; and a solvent for carrying said ferroelectric chemical vapor deposition precursor taken from the group of solvents consisting of type A solvents, taken from the group of solvents consisting of tetraglyme, triglyme, triethylenetetramine, N,N,Nâ€²,Nâ€²,-tetramethylethylenediamine; N,N,Nâ€²,Nâ€²,Nâ€³,Nâ€³-pentamethyldiethylenetriamine; and 2,2â€²-bipyridine; type B solvents taken from the group of solvents consisting of tetrahydrofuran, butyl ethyl ether, tert-butyl ethyl ether, butyl ether, and pentyl ether; and type C solvents taken from the group of solvents consisting of iso-propanol, 2-butanol, 2-ethyl-1-hexanol, 2-pentanol, toluene, xylene and butyl acetate; and mixtures of solvent types A, B and C.