Proceedings ArticleDOI
Large-area graphene-based thin films using rapid reduction of graphene-oxide
TLDR
In this article, a method to fabricate large-area graphene-based thin films using rapid low temperature reduction of graphene-oxide was proposed, where the reduced graphene oxide thin films showed decreased interlayer spacing and higher carbon-to-oxygen ratio.Abstract:
In the present study, we propose a method to fabricate large-area graphene-based thin films using rapid low temperature reduction of graphene-oxide. Large area (~17.5 sq.cm.) graphene oxide (GO) thin films are fabricated by vacuum filtration of GO solution synthesized by the modified Hummers' method. The graphene-oxide thin films are reduced in a MTS testing machine equipped with a controlled atmosphere furnace. Reduction is carried out at temperatures from 200 °C to 400 °C, for different time durations. The fabricated reduced GO thin films are characterized using powder x-ray diffraction and energy-dispersive x-ray spectroscopy. The reduced graphene oxide thin films show decreased interlayer spacing and higher carbon-to-oxygen ratio. Conductivity measurements show an increase in conductivity by over _ve orders of magnitude compared to GO. This method offers a scalable new way of fabricating conductive large-area graphene-based thin films.read more
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Journal ArticleDOI
Photoreduction and Thermal Properties of Graphene-Based Flexible Films
Gautam Naik,Sridhar Krishnaswamy +1 more
TL;DR: In this article, an efficient method for large-area photoreduction of graphene oxide flexible films was reported, where the laser-based reduction can be carried out in situ and can be tuned to attain the properties required.
References
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Journal ArticleDOI
Electric Field Effect in Atomically Thin Carbon Films
Kostya S. Novoselov,Andre K. Geim,Sergey V. Morozov,Da Jiang,Y. Zhang,S. V. Dubonos,Irina V. Grigorieva,A. A. Firsov +7 more
TL;DR: Monocrystalline graphitic films are found to be a two-dimensional semimetal with a tiny overlap between valence and conductance bands and they exhibit a strong ambipolar electric field effect.
Journal ArticleDOI
The rise of graphene
TL;DR: Owing to its unusual electronic spectrum, graphene has led to the emergence of a new paradigm of 'relativistic' condensed-matter physics, where quantum relativistic phenomena can now be mimicked and tested in table-top experiments.
Journal ArticleDOI
Superior Thermal Conductivity of Single-Layer Graphene
Alexander A. Balandin,Suchismita Ghosh,Wenzhong Bao,Irene Calizo,Desalegne Teweldebrhan,Feng Miao,Chun Ning Lau +6 more
TL;DR: The extremely high value of the thermal conductivity suggests that graphene can outperform carbon nanotubes in heat conduction and establishes graphene as an excellent material for thermal management.
Journal ArticleDOI
Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
Xuesong Li,Weiwei Cai,Jinho An,Seyoung Kim,Junghyo Nah,Dongxing Yang,Richard D. Piner,Aruna Velamakanni,Inhwa Jung,Emanuel Tutuc,Sanjay K. Banerjee,Luigi Colombo,Rodney S. Ruoff +12 more
TL;DR: It is shown that graphene grows in a self-limiting way on copper films as large-area sheets (one square centimeter) from methane through a chemical vapor deposition process, and graphene film transfer processes to arbitrary substrates showed electron mobilities as high as 4050 square centimeters per volt per second at room temperature.
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