Topographies of Thick Cu-Benzotriazolate Films on Copper

Abstract Topographies of thick copper benzotriazolate (CuBTA) films were examined using scanning electron microscopy (SEM). CuBTA films were formed on coarse grained polycrystalline copper in slightly acidic solutions containing benzotriazole. The thickness of the underlying Cu2O and the CuBTA films were estimated from infrared multiple reflection-absorption spectra. Relationships among the structures of the CuBTA films, the Cu2O interlayers, and the crystallographic orientations of substrate copper crystal faces are described.