Patent ID: 6596888
Filing Date: 2003-07-22
Classification: H01L

Abstract:
A source reagent composition for the formation of tungsten nitride films comprising at least one single imido tungsten imido species selected from the group consisting of:i) Tungsten imido complexes of the formula: â€ƒwherein: R is selected from the group consisting of H, Cl, C1-C8 alkyl, C1-C8 perfluoroaikyl, silicon-containing groups of the type SiR1R2R3 and nitrogen-containing groups of the type NR4R5, wherein each of said R1-R5 are selected from the group consisting of H, Cl, C1-C8 alkyl, aryl and C1-C8 perfluoroalkyl; X is selected from the group consisting of F, Cl, Br, I and N3; L is selected from the group consisting of C1-C8 alkylnitrile, arylnitrile, ether, cyclic ether, heterocyclic aromatic amine, heterocyclic aliphatic amine and alkyl amine (NR11R12R13), wherein each of R11, R12, R13 are selected from the group consisting of H, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl and silicon-containing groups of the type SiR21R22R23; wherein each of said R21, R22 and R23 are selected from the group consisting of H, C1-C8 alkyl, aryl and C1-C8 perfluoroalkyl; ii) tungsten imido complexes of the formula: XyL5-yW(NR) or XyL4-yW(NR) â€ƒwherein R is selected from the group consisting of H, Cl, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl, silicon-containing groups of the type SiR1R2R3 and nitrogen-containing groups of the type NR4R5, wherein each of said R1-R5 is selected from the group consisting of H, Cl, C1-C8 alkyl, aryl and C1-C8 perfluoroalkyl; X is selected from the group consisting of F, Cl, Br, I, N3 and NR11R12, wherein each of R11 and R12 are selected from the group consisting of H, Cl, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl, silicon-containing groups of the type SiR13R14R15 and nitrogen-containing groups of the type NR16R17, wherein each of said R13-R17 is selected from H, Cl, C1-C8 alkyl, aryl and C1-C8 perfluoroalkyl; y is an integer between 2 and 4, and L is selected from the group consisting of C1-C8 alkylnitrile, arylnitrile, ether, cyclic ether, heterocyclic aromatic amine, heterocyclic aliphatic amine, alkylamine (NR21R22R23), wherein each of said R21, R22, R23 are selected from the group consisting of H, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl and silicon-containing groups of the type SiR24R25R26; wherein each of each of R24, R25 and R26 are selected from the group consisting of H, C1-C8 alkyl, aryl and C1-C8 perfluoroalkyl; iii) tungsten imido complexes of the formula: â€ƒwherein: each of R, R1, R2 are selected from the group consisting of H, Cl, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl, silicon-containing groups of the type SiR3R4R5 and nitrogen-containing groups of the type NR6R7, wherein each of said R3-R7 is selected from the group consisting of H, Cl, C1-C8 alkyl, aryl and C1-C8 perfluoroalkyl; X is selected from the group consisting of F, Cl, Br, I, N3 and NR11R12, wherein R11, R12 are selected from the group consisting of H, Cl, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl, silicon-containing group of the type SiR13R14R15 and nitrogen-containing groups of the type NR16R17, wherein each of R13-R17 is selected from the group consisting of H, Cl, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl; Q is selected from the group consisting of (CH2)2, (CH2)3, and CH&boxH;CH; L is selected from the group consisting of C1-C8 alkylnitrile, arylnitrile, ether, cyclic ether, heterocyclic aromatic amine, heterocyclic aliphatic amine and alkylamine (NR21R22R23), wherein each of said R21, R22, R23 are selected from the group consisting of H, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl and silicon-containing group of the type SiR24R25R26 where each of R24, R25, R26 are selected from the group consisting of H, C1-C8 alkyl, aryl and C1-C8 perfluoroalkyl, and L may also be an empty coordination site with no ligand; iv) tungsten imido complexes of the formula: â€ƒwherein: each of R, R1-R4 are selected from the group consisting of H, Cl, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl, silicon-containing groups of the type SiR5R6R7 and nitrogen-containing groups of the type NR8R9, wherein each of said R5-R9 are selected from the group consisting of H, Cl, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl; wherein Q is selected from the group consisting of (CH2)2, (CH2)3 and CH&boxH;CH and wherein L is selected from the group consisting of C1-C8 alkylnitrile, arylnitrile, ether, cyclic ether, heterocyclic aromatic amine, heterocyclic aliphatic amine and alkylamine (NR11R12R13), wherein each of R11, R12, R13 are selected from the group consisting of H, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl and silicon-containing groups of the type SiR14R15R16 wherein each of R14, R15, R16 are selected from the group consisting of H, C1-C8 alkyl, aryl and C1-C8 perfluoroalkyl, and L may also be an empty coordination site with no ligand; v) tungsten imido complexes of the formula: â€ƒwherein: each of R, R1-R3 are selected from the group consisting of H, Cl, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl, silicon-containing groups of the type SiR5R6R7 and nitrogen-containing groups of the type NR8R9, wherein each of said R5-R9 are selected from the group consisting of H, Cl, C1-C8 alkyl, aryl and C1-C8 perfluoroalkyl; X is selected from the group consisting of F, Cl, Br, I, N3 and NR11R12, wherein each of said R11 and R12 are selected from the group consisting of H, Cl, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl, silicon-containing groups of the type SiR13R14R15 and nitrogen-containing groups of the type NR16R17, wherein each of said R13-R17 is selected from the group consisting of H, Cl, C1-C8 alkyl, aryl, C1-C8 perfluoroalkyl, and Q is selected from the group consisting of (CH2)2 and (CH2)3.