Interfacial reaction mechanism and kinetics between Au–20Sn and Sn

Epitaxial Growth of SnS2 Ribbons on a Au–Sn Alloy Seed Film Surface

“…A previous study demonstrating the effect of heat treatment on a Au–Sn diffusion couple revealed that a microstructure of the Au-rich alloy phase appeared in the initial stage of the heat treatment, and it gradually evolved to Sn-rich phases such as AuSn 4 and AuSn 2 . An interface reaction between Au and Sn film at elevated temperatures has also been reported in the literature, in which the precipitation of AuSn 4 and AuSn 2 microstructures was found after a solidification process . Furthermore, the Sn-rich alloy phase has been found to have epitaxial relationships with Au film at their interface. , These previous reports suggest that the nucleation of such Sn-rich phases on an epitaxial Au(111) surface could be the origin of the epitaxial SnS 2 ribbon formation.…”

“…46 An interface reaction between Au and Sn film at elevated temperatures has also been reported in the literature, in which the precipitation of AuSn 4 and AuSn 2 microstructures was found after a solidification process. 47 Furthermore, the Sn-rich alloy phase has been found to have epitaxial relationships with Au film at their interface. 48,49 These previous reports suggest that the nucleation of such Sn-rich phases on an epitaxial Au(111) surface could be the origin of the epitaxial SnS 2 ribbon formation.…”