Evidence of Cationic Antiphase Disorder in Epitaxial Cu(In,Ga)S2 Grown on GaP/Si(001)
Eugène Bertin,
Éric Gautron,
Nicolas Barreau
et al.
Abstract:We present a transmission electron microscopy study of epitaxial Cu(In,Ga)S2 (CIGS) films co‐evaporated on GaP/Si(001), in either Cu‐rich or Cu‐poor conditions. We first unveil the spatial distribution and the orientation of the different phases by means of electron diffraction. From atomically resolved imaging of the CIGS film’s atomic structure, we conclude that different chalcopyrite domains, sharing cation antiphase symmetries of the cation sublattice, coexist in the films. We conceptualize at least three … Show more
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