Diffusion Barrier Deposition on a Copper
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K.-E. Elers; V. Saanila; P. J. Soininen; W.-M. Li; J. T. Kostamo; S. Haukka; J.
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Article
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2002
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John Wiley and Sons
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English
β 247 KB
Diffusion barrier materials, TiN and WN, were deposited by atomic layer deposition (ALD). The chlorine concentration of the TiN film was as low as 1.2 at.-%, and resistivity was below 200 lX cm. Ultra high aspect ratio (AR = 85) trenches were used to assess step coverage. Tungsten nitride film, depo