کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9781278 | 1510835 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Buffer layer effect in nanostructured tin electrodeposition on insulating and conducting substrates
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Buffer layer effect in nanostructured tin electrodeposition on insulating and conducting substrates Buffer layer effect in nanostructured tin electrodeposition on insulating and conducting substrates](/preview/png/9781278.png)
چکیده انگلیسی
The electroplating techniques for metal aggregates and films deposition commonly use an electric current to reduce metal ions in solution, but are restricted to conducting substrate. This new electrochemical technique permits coating of insulating or conducting substrates with metals having controlled aggregate size and growth speed. The basis of our approach is the progressive outward growth of the metal from an electrode in contact with the substrate, with the cell geometry chosen in such a way that the electron current providing the reduction passes through the growing deposit. The nanostructured deposit is composed of branched nanoaggregates from a quasi-continuous film to a more dendritic morphology dependant on current conditions. This approach has been used to elaborate tin electrodeposited thin films composed of a homogeneous distribution of nanoparticles on conducting or insulating substrates. In our works, when a non-continuous buffer gold coating is used, spontaneous mixing of tin atoms into AuSn nanoparticles takes place even at room temperature forming a nanostructured fractal film, if the substrate is conducting or insulating. Without a gold buffer layer, the deposit is composed of large pure tin micro-crystals with a large size distribution, less adapted to tin oxide nanoparticle formation. Indeed, from these tin metal deposits, the final goal is to elaborate functional nanostructured tin oxide films by oxidation for gas sensor applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Solid State Chemistry - Volume 33, Issues 2â4, 2005, Pages 299-308
Journal: Progress in Solid State Chemistry - Volume 33, Issues 2â4, 2005, Pages 299-308
نویسندگان
P. Andreazza, C. Andreazza-Vignolle, I. Kante, T. Devers, A. Levesque, L. Allam,