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Single-step deposition of high-mobility graphene at reduced temperatures

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TLDR
A plasma-enhanced CVD chemistry that enables the entire process to take place in a single step, at reduced temperatures (<420 °C), and in a matter of minutes, indicates that elevated temperatures and crystalline substrates are not necessary for synthesizing high-quality graphene.
Abstract
Current methods of chemical vapour deposition (CVD) of graphene on copper are complicated by multiple processing steps and by high temperatures required in both preparing the copper and inducing subsequent film growth. Here we demonstrate a plasma-enhanced CVD chemistry that enables the entire process to take place in a single step, at reduced temperatures (o420C), and in a matter of minutes. Growth on copper foils is found to nucleate from arrays of well-aligned domains, and the ensuing films possess sub-nanometre smoothness, excellent crystalline quality, low strain, few defects and roomtemperature electrical mobility up to (6.0±1.0) � 10 4 cm 2 V � 1 s � 1 , better than that of large,

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Graphene and two-dimensional materials for silicon technology.

TL;DR: The opportunities, progress and challenges of integrating atomically thin materials with silicon-based nanosystems are reviewed, and the prospects for computational and non-computational applications are considered.
Journal ArticleDOI

Promises and prospects of two-dimensional transistors

TL;DR: In this article, the authors review the promise and current status of 2D transistors, and emphasize that widely used device parameters (such as carrier mobility and contact resistance) could be frequently misestimated or misinterpreted, and may not be the most reliable performance metrics for benchmarking two-dimensional transistors.

Production and processing of graphene and related materials

Claudia Backes, +148 more
TL;DR: In this article, the authors present an overview of the main techniques for production and processing of graphene and related materials (GRMs), as well as the key characterization procedures, adopting a 'hands-on' approach, providing practical details and procedures as derived from literature and from the authors' experience, in order to enable the reader to reproduce the results.
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Sensitive and selective NO2 gas sensor based on WO3 nanoplates

TL;DR: In this article, the authors used a simple and a facile hydrothermal technique to fabricate NO 2 gas sensor using thin films of tungsten oxide (WO 3 ) grown directly on to a soda-lime glass substrate without assistance of any seed layer.
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Two-dimensional transistors beyond graphene and TMDCs

TL;DR: The recent efforts and progress in exploring novel 2DSCs beyond graphene and TMDCs for ultra-thin body transistors are reviewed, discussing the merits, limits and prospects of each material.
References
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Journal ArticleDOI

Raman spectrum of graphene and graphene layers.

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.
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Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils

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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Boron nitride substrates for high-quality graphene electronics

TL;DR: Graphene devices on h-BN substrates have mobilities and carrier inhomogeneities that are almost an order of magnitude better than devices on SiO(2).
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Energy gaps and a zero-field quantum Hall effect in graphene by strain engineering

TL;DR: In this paper, it was shown that a designed strain aligned along three main crystallographic directions induces strong gauge fields that effectively act as a uniform magnetic field exceeding 10'T, similar to the case of a topological insulator.
Journal ArticleDOI

Strain-Induced Pseudo–Magnetic Fields Greater Than 300 Tesla in Graphene Nanobubbles

TL;DR: Experimental spectroscopic measurements by scanning tunneling microscopy of highly strained nanobubbles that form when graphene is grown on a platinum surface open the door to both the study of charge carriers in previously inaccessible high magnetic field regimes and deliberate mechanical control over electronic structure in graphene or so-called “strain engineering.”
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