دورية أكاديمية
Optical-quality controllable wet-chemical doping of graphene through a uniform, transparent and low-roughness F4-TCNQ/MEK layer
| العنوان: | Optical-quality controllable wet-chemical doping of graphene through a uniform, transparent and low-roughness F4-TCNQ/MEK layer |
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| المؤلفون: | Misseeuw, Lara, Krajewska, Aleksandra, Pasternak, Iwona, Ciuk, Tymoteusz, Strupinski, Wlodek, Reekmans, Gunter, Adriaensens, Peter, Geldof, Davy, Van Vlierberghe, Sandra, Thienpont, Hugo, Dubruelf, Peter, Vermeulen, Nathalie |
| المصدر: | 2046-2069 ; RSC advances |
| سنة النشر: | 2016 |
| المجموعة: | IRUA - Institutional Repository van de Universiteit Antwerpen |
| مصطلحات موضوعية: | Chemistry |
| الوصف: | Controllable chemical doping of graphene has already proven very useful for electronic applications, but when turning to optical and photonic applications, the additional requirement of having both a high transparency and a low surface roughness has, to our knowledge, not yet been fulfilled by any chemical dopant system reported so far. In this work, a new method that meets for the first time this opticalquality requirement while also providing efficient, controllable doping is presented. The method relies on F4-TCNQ dissolved in methyl ethyl ketone (MEK) yielding a uniform deposition after spin coating because of an extraordinary charge transfer interaction between the F4-TCNQ and MEK molecules. The formed F4-TCNQ/MEK layer exhibits a very high surface quality and optical transparency over the visible-infrared wavelength range between 550 and 1900 nm. By varying the dopant concentration of F4-TCNQ from 2.5 to 40 mg ml1 MEK, the doping effect can be controlled between Dn ¼ +5.73 1012 cm2 and +1.09 1013 cm2 for initially strongly p-type hydrogen-intercalated graphene grown on 6Hsilicon- carbide substrates, and between Dn ¼ +5.56 1012 cm2 and +1.04 1013 cm2 for initially weakly p-type graphene transferred on silicon samples. This is the first time that truly optical-quality chemical doping of graphene is demonstrated, and the obtained doping values exceed those reported before for F4-TCNQ-based graphene doping by as much as 50%. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/isi/000388111900075 |
| الإتاحة: | https://doi.org/10.1039/C6RA24057GTest https://hdl.handle.net/10067/1364050151162165141Test |
| حقوق: | info:eu-repo/semantics/closedAccess |
| رقم الانضمام: | edsbas.86DB4BE2 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |