Organic Functionalization of 3C-SiC Surfaces
| العنوان: | Organic Functionalization of 3C-SiC Surfaces |
|---|---|
| المؤلفون: | Sebastian J. Schoell, Stephen E. Saddow, Martin S. Brandt, John Howgate, Alexandra Oliveros, Matthias Sachsenhauser, Ian D. Sharp, Martin Stutzmann, Christopher L. Frewin |
| المصدر: | ACS Applied Materials & Interfaces. 5:1393-1399 |
| بيانات النشر: | American Chemical Society (ACS), 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Materials science, Passivation, Surface photovoltage, Octadecyltrimethoxysilane, Nanotechnology, Contact angle, chemistry.chemical_compound, X-ray photoelectron spectroscopy, chemistry, Chemical engineering, Monolayer, Surface modification, General Materials Science, Volta potential |
| الوصف: | We demonstrate the functionalization of n-type (100) and (111) 3C-SiC surfaces with organosilanes. Self-assembled monolayers (SAMs) of amino-propyldiethoxymethylsilane (APDEMS) and octadecyltrimethoxysilane (ODTMS) are formed via wet chemical processing techniques. Their structural, chemical, and electrical properties are investigated using static water contact angle measurements, atomic force microscopy, and X-ray photoelectron spectroscopy, revealing that the organic layers are smooth and densely packed. Furthermore, combined contact potential difference and surface photovoltage measurements demonstrate that the heterostructure functionality and surface potential can be tuned by utilizing different organosilane precursor molecules. Molecular dipoles are observed to significantly affect the work functions of the modified surfaces. Furthermore, the magnitude of the surface band bending is reduced following reaction of the hydroxylated surfaces with organosilanes, indicating that partial passivation of electrically active surface states is achieved. Micropatterning of organic layers is demonstrated by lithographically defined oxidation of organosilane-derived monolayers in an oxygen plasma, followed by visualization of resulting changes of the local wettability, as well as fluorescence microscopy following immobilization of fluorescently labeled BSA protein. |
| تدمد: | 1944-8252 1944-8244 |
| DOI: | 10.1021/am302786n |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10038aa175300ec2d698b0144513c40e https://doi.org/10.1021/am302786n |
| رقم الانضمام: | edsair.doi.dedup.....10038aa175300ec2d698b0144513c40e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19448252 19448244 |
|---|---|
| DOI: | 10.1021/am302786n |