Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8032700 | Thin Solid Films | 2018 | 24 Pages |
Abstract
Radio frequency sputtering was used to grow copper telluride films from targets fabricated by cold pressing mixtures of copper and tellurium powders. Through this method, Cu2âxTe targets and films with 0â¯â¤â¯xâ¯â¤â¯1 in nominal composition were elaborated. X-ray diffraction showed that the films comprised mixtures of various copper telluride phases. However, dominant phases resulted, in most cases, depending on the target nominal composition and on the substrate temperature. The temperatures employed varied between room temperature and 350â¯Â°C. In the specific cases of growths at 100â¯Â°C from the target with nominal composition [Cu]/[Te]â¯=â¯1, and at 200â¯Â°C from the [Cu]/[Te]â¯=â¯1.5 target, nearly single phases of CuTe and Cu7Te5 were obtained, respectively. Through Hall effect measurements the resistivity, free carrier density and mobility were determined as a function of target composition and substrate temperature.
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Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
J.U. Salmón Gamboa, Marius RamÃrez Cardona, M.A. Hernández Landaverde, S.J. Jiménez Sandoval,