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Abstract

There is disclosed a method of forming a copper wiring in a semiconductor device. The method establishes a new process technology by which a seed layer is formed by a metal organic chemical vapor deposition method using 1,1,1,5,5,5,5-hexafluoro-2, 4-pentadionato (3,3-dimethyl-1-butene)-copper(I) ((hfac)Cu(DMB)) compound as a copper precursor, by optimally setting deposition process conditions of Cu deposition equipment and filling Cu by either a electroplating method or a electroless-plating method. An alternate method establishes a new process technology by which a first seed layer is formed by physical vapor deposition method, a second seed layer is formed on the first seed layer by a metal organic chemical vapor deposition method using the ((hfac)Cu(DMB)) compound as a copper precursor and Cu is then filled by electroplating method or electroless-plating method. Thus, according to the present invention, the new process technology can not only realize reappearance of the copper deposition process but also obtain a copper thin film having a good film quality.

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