Our news journalists obtained a quote from the research, "Under electron beam irradiation the Cu2S phase transforms into a high-chalcocite phase while the CdS phase maintains its wurtzite structure. Time resolved experiments reveal that Cu+-Cd2+ cation exchange at the CdS/Cu2S interfaces is stimulated by the electron beam and proceeds within an undisturbed and coherent sulfur sob lattice A variation of the electron beam current provides an efficient way to control and exploit such irreversible solid-state chemical processes that provide unique information about system dynamics at the atomic scale. Specifically, we show that the electron beam-induced copper cadmium exchange is site specific and anisotropic."
According to the news editors, the research concluded: "A resulting displacement of the CdS/Cu2S interfaces caused by beam-induced cation interdiffusion equals within a factor of 3-10 previously reported Cu diffusion length measurements in heterostructured CdS/Cu2S thin film solar cells with an activation energy of 0.96 eV."
For more information on this research see: Controlling electron beam-induced structure modifications and cation exchange in cadmium sulfide-copper sulfide heterostructured nanorods. Ultramicroscopy, 2013;134():207-213. Ultramicroscopy can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae
The news correspondents report that additional information may be obtained from
Keywords for this news article include: Cadmium,
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