تقرير
In situ functionalization of graphene
| العنوان: | In situ functionalization of graphene |
|---|---|
| المؤلفون: | Greben, Kyrylo, Kovalchuk, Sviatoslav, Valencia, Ana M., Kirchhof, Jan N., Heeg, Sebastian, Rietsch, Philipp, Reich, Stephanie, Cocchi, Caterina, Eigler, Siegfried, Bolotin, Kirill I. |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Materials Science |
| الوصف: | While the basal plane of graphene is inert, defects in it are centers of chemical activity. An attractive application of such defects is towards controlled functionalization of graphene with foreign molecules. However, the interaction of the defects with reactive environment, such as ambient, decreases the efficiency of functionalization and makes it poorly controlled. Here, we report a novel approach to generate, monitor with time resolution, and functionalize the defects $\textit{in situ}$ without ever exposing them to the ambient. The defects are generated by an energetic Argon plasma and their properties are monitored using $\textit{in situ}$ Raman spectroscopy. We find that these defects are functional, very reactive, and strongly change their density from $\approx 1\cdot10^{13} cm^{-2}$ to $\approx 5\cdot10^{11} cm^{-2}$ upon exposure to air. We perform the proof of principle $\textit{in situ}$ functionalization by generating defects using the Argon plasma and functionalizing them $\textit{in situ}$ using Ammonia functional. The functionalization induces the n-doping with a carrier density up to $5\cdot10^{12} cm^{-2}$ in graphene and remains stable in ambient conditions. Comment: 12 pages, 4 figures, including Supplementary Information with 6 pages, 6 figures and 1 table |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2009.12808 |
| رقم الأكسشن: | edsarx.2009.12808 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |