Ultra thin diffusion barriers for Cu int
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F. Braud; J. Torres; J. Palleeau; J.L. Mermet; C. Marcadal; E. Richard
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Article
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1997
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Elsevier Science
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English
โ 410 KB
The reliability of copper interconnection depends on the barrier effectiveness of conductive or non-conductive layers to block any copper motion. The conductive barrier materials currently used in AI-based interconnections -Ti, TiN, W and nitrided W -have been investigated as barrier against copper