Patent ID: 6110529
Filing Date: 2000-08-29
Classification: C07F,C23C,G02B,H01L

Abstract:
A method of forming on a substrate a metal film, comprising depositing said metal film on said substrate via chemical vapor deposition from a metalorganic reagent solution consisting essentially of a metalorganic complex dissolved in a solvent or suspending agent;wherein said metalorganic complex has the formula:MA.sub.Y Xwherein:M is a y-valent metal selected from the group consisting of Mg, Ca, Sr. Ba, Sc, Y, La, Ce, Ti, Zr, Hf, Pr, V, Nb, Ta, Nd, Cr, W, Pm, Mn, Re, Sm, Ru, Eu, Co, Rh, Ir, Gd, Ni, Tb, Cu, Dy, Ho, Tl, Er, Pb, Tm, Bi, and Yb;A is a monodentate or multidentate organic ligand selected from the group consisting of .beta.-diketonates, .beta.-thioketonates, cyclopentadienyls, alkyls, perfluoroalkyls, alkoxides, perfluoroalkoxides, and Schiff bases, and A is coordinated to M which allows complexing of MA.sub.Y with X;y is an integer having a value of 2, 3 or 4;each of the A ligands is the same or different; andX is a monodentate or multidentate ligand coordinated to M and X is selected from the group consisting of:oxyhydrocarbyl ligands;nitrogenous oxyhydrocarbyl ligands;fluorooxyhydrocarbyl ligands;thiooxyhydrocarbyl ligands;amines and polyamines;bipyridines;ligands of the formula: ##STR2## wherein G is --O--, --S--, or --NR--, wherein R is H or hydrocarbyl; crown ethers;thioethers; andligands of the formula:R.sup.0 (C(R.sup.1).sub.2 C(R.sup.2).sub.2 O).sub.n R.sup.0wherein:R.sup.0 =H, methyl, ethyl, n-propyl, cyanato, perfluoroethyl, perfluoro-n-propyl, or vinyl;R.sup.1 =H, F, or a sterically acceptable hydrocarbyl substituent;R.sup.2 =H, F, or a sterically acceptable hydrocarbyl substituent;n=2, 3, 4, 5, or 6; andeach R.sup.0, R.sup.1, and R.sup.2 is the same as or different from the other R.sup.0, R.sup.1, and R.sup.2, respectively,wherein said solvent or suspending agent comprises one, two or three components selected from the group consisting of:alkyl nitrites of the formula NR.sub.b :wherein R.sub.b is H, C.sub.1 -C.sub.1 -C.sub.8 alkyl, or C.sub.1 -C.sub.8 perfluoroalkyl;C.sub.2 -C.sub.12 alkanols;C.sub.6 -C.sub.12 aliphatic hydrocarbons;C.sub.6 -C.sub.18 aromatic hydrocarbons;dialkyl esters;glymes having from 1 to 20 ethoxy --(C.sub.2 H.sub.4 O)-- repeat units; andorganic ethers selected from the group consisting of dialkyl ethers, cyclic ethers and crown ethers;wherein said method comprises:volatilizing the metalorganic reagent liquid solution to yield a metal source vapor; andcontacting the metal source vapor with the substrate, to deposit the metal-containing film thereon.