Synthesis and Characterization of Copper(I) Amidinates as Precursors for Atomic Layer Deposition (ALD) of Copper Metal
作者:Zhengwen Li、Seán T. Barry、Roy G. Gordon
DOI:10.1021/ic048492u
日期:2005.3.21
A series of copper(I) amidinates of the general type [(R ' NC(R)NR '')Cu](2) (R ' and R '' = n-propyl, isopropyl, n-butyl, isobutyl, sec-butyl, tert-butyl; R = methyl, n-butyl) have been synthesized and characterized. These compounds are planar dimers, bridged by nearly linear N-Cu-N bonds. Their properties (volatility, low melting point, high thermal stability, and self-limited surface reactivity) are well-suited for atomic layer deposition (ALD) of copper metal films that are pure, highly conductive, conformal, and strongly adherent to substrates.