Journal ArticleDOI
Large-scale pattern growth of graphene films for stretchable transparent electrodes
Keun Soo Kim,Yue Zhao,Houk Jang,Sang Yoon Lee,Jong Min Kim,Kwang S. Kim,Jong Hyun Ahn,Philip Kim,Philip Kim,Jae-Young Choi,Byung Hee Hong +10 more
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TLDR
The direct synthesis of large-scale graphene films using chemical vapour deposition on thin nickel layers is reported, and two different methods of patterning the films and transferring them to arbitrary substrates are presented, implying that the quality of graphene grown by chemical vapours is as high as mechanically cleaved graphene.Abstract:
Problems associated with large-scale pattern growth of graphene constitute one of the main obstacles to using this material in device applications. Recently, macroscopic-scale graphene films were prepared by two-dimensional assembly of graphene sheets chemically derived from graphite crystals and graphene oxides. However, the sheet resistance of these films was found to be much larger than theoretically expected values. Here we report the direct synthesis of large-scale graphene films using chemical vapour deposition on thin nickel layers, and present two different methods of patterning the films and transferring them to arbitrary substrates. The transferred graphene films show very low sheet resistance of approximately 280 Omega per square, with approximately 80 per cent optical transparency. At low temperatures, the monolayers transferred to silicon dioxide substrates show electron mobility greater than 3,700 cm(2) V(-1) s(-1) and exhibit the half-integer quantum Hall effect, implying that the quality of graphene grown by chemical vapour deposition is as high as mechanically cleaved graphene. Employing the outstanding mechanical properties of graphene, we also demonstrate the macroscopic use of these highly conducting and transparent electrodes in flexible, stretchable, foldable electronics.read more
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Large-Area Chemically Modified Graphene Films: Electrophoretic Deposition and Characterization by Soft X-ray Absorption Spectroscopy
Vincent Lee,Luisa Whittaker,Cherno Jaye,Kristen M. Baroudi,Daniel A. Fischer,Sarbajit Banerjee +5 more
TL;DR: In this paper, a facile, rapid, and scalable electrophoretic deposition approach is developed for the fabrication of large-area chemically derived graphene films on conductive substrates based on the electrostatic deposition of graphene oxide and reduced graphene oxide components.
Journal ArticleDOI
Biosensors based on graphene oxide and its biomedical application.
TL;DR: In this review, GO-based biological sensors developed so far are classified by their signal generation strategy and the comprehensive overview of them is provided.
Journal ArticleDOI
Doped graphene electrodes for organic solar cells
TL;DR: It was found that AuCl(3) doping on graphene can alter the graphene surface wetting properties such that a uniform coating of the hole-transporting layer can be achieved and device success rate can be increased, resulting in improved overall PCE performance of the OPV devices.
Journal ArticleDOI
Magnetic Fe3O4-graphene oxide/polystyrene: Fabrication and characterization of a promising nanocomposite
TL;DR: In this paper, a novel magnetic composite of graphene oxide and polystyrene (NanoFe 3 O 4 @GO/PS) was fabricated through two steps, i.e., a simple and effective one-pot co-precipitation of iron (II) and chlorides, in the presence of the graphene oxide (GO), resulted in the fabrication of the magnetite-GO hybrid-nanoparticles.
Journal ArticleDOI
Vapour–liquid–solid growth of monolayer MoS 2 nanoribbons
Shisheng Li,Shisheng Li,Yung-Chang Lin,Wen Zhao,Jing Wu,Zhuo Wang,Zhuo Wang,Zehua Hu,Youde Shen,Dai-Ming Tang,Junyong Wang,Qi Zhang,Hai Zhu,Leiqiang Chu,Weijie Zhao,Chang Liu,Zhipei Sun,Takaaki Taniguchi,Minoru Osada,Minoru Osada,Wei Chen,Qing-Hua Xu,Andrew T. S. Wee,Kazu Suenaga,Kazu Suenaga,Feng Ding,Goki Eda +26 more
TL;DR: The vapour–liquid–solid growth of monolayer MoS2 is reported, yielding highly crystalline ribbons with a width of few tens to thousands of nanometres, highlighting the prospects for the controlled growth of atomically thin nanostructure arrays for nanoelectronic devices and the development of unique mixed-dimensional structures.
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
Two-dimensional gas of massless Dirac fermions in graphene
Kostya S. Novoselov,A. K. Geim,Sergey V. Morozov,Da Jiang,Mikhail I. Katsnelson,Irina V. Grigorieva,S. V. Dubonos,A. A. Firsov +7 more
TL;DR: This study reports an experimental study of a condensed-matter system (graphene, a single atomic layer of carbon) in which electron transport is essentially governed by Dirac's (relativistic) equation and reveals a variety of unusual phenomena that are characteristic of two-dimensional Dirac fermions.
Journal ArticleDOI
Measurement of the Elastic Properties and Intrinsic Strength of Monolayer Graphene
TL;DR: Graphene is established as the strongest material ever measured, and atomically perfect nanoscale materials can be mechanically tested to deformations well beyond the linear regime.
Journal ArticleDOI
Raman spectrum of graphene and graphene layers.
Andrea C. Ferrari,Jannik C. Meyer,Vittorio Scardaci,Cinzia Casiraghi,Michele Lazzeri,Francesco Mauri,S. Piscanec,Da Jiang,K. S. Novoselov,S. Roth,A. K. Geim +10 more
TL;DR: This work shows that graphene's electronic structure is captured in its Raman spectrum that clearly evolves with the number of layers, and allows unambiguous, high-throughput, nondestructive identification of graphene layers, which is critically lacking in this emerging research area.