Patent ID: 9171715
Filing Date: 2015-10-27
Classification: C23C,H01L

Abstract:
1. An atomic layer deposition process for forming a germanium oxide thin film on a substrate in a reaction chamber, the ALD process comprising: contacting the substrate with a vapor phase tetravalent Ge precursor such that at most a molecular monolayer of the Ge precursor is formed on the substrate surface, removing excess Ge precursor and reaction by products, if any, contacting the substrate with a vapor phase oxygen precursor, wherein the oxygen precursor reacts with the Ge precursor on the substrate surface; removing excess oxygen precursor and any gaseous by-products, and repeating the contacting and removing steps multiple times until a germanium oxide thin film comprising less than about 1-at % of metal or semi-metal other than Ge of the desired thickness has been formed; wherein the Ge precursor has a formula as in one of the following general formulas: Wherein R can be independently selected from the group consisting of alkyl and substituted alkyl; Wherein the x is an integer from 1 to 4; R is an organic ligand and can be independently selected from the group consisting of alkoxides, alkylsilyls, alkyl, substituted alkyl, alkylamines; and A can be independently selected from the group consisting of alkyl, substituted alkyl, alkoxides, alkylsilyls, alkyl, alkylamines, halide, and hydrogen; Wherein the x is an integer from 1 to 4; R can be independently selected from the group consisting of alkyl and substituted alkyl; and A can be independently selected from the group consisting of alkyl, alkoxides, alkylsilyls, alkyl, substituted alkyl, alkylamines, halide, and hydrogen; Wherein R R Wherein the x is an integer from 1 to 4; R R A can be independently selected from the group consisting of alkyl, alkoxides, alkylsilyls, alkyl, substituted alkyl, alkylamines, halide, and hydrogen; Wherein the n is an integer from 1 to 3; R R Wherein the n is an integer from 1 to 3; and Wherein R can be independently selected from the group consisting of alkyl and substituted alkyl; Wherein the n is an integer from 1 to 3; and R is an organic ligand and can be independently selected from the group consisting of alkoxides, alkylsilyls, alkyl, substituted alkyl, alkylamines; Wherein the x is an integer from 1 to 3; y is an integer from 1 to 3; R is an organic ligand and can be independently selected from the group consisting of alkoxides, alkylsilyls, alkyl, substituted alkyl, alkylamines; and A can be independently selected from the group consisting of alkyl, alkoxides, alkylsilyls, alkyl, substituted alkyl, alkylamines, halide, and hydrogen.