Nucleation and growth dynamics of graphene on oxygen exposed copper substrate

Chuang, Min-Chiang; Woon, Wei Yen

doi:10.1016/j.carbon.2016.03.049

Cited by 37 publications

(21 citation statements)

References 22 publications

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“…It has been reported that graphene domain density and thickness uniformity are correlated to the surface roughness of the Cu substrate [ 12 , 23 , 34 , 38 ]. From Fig.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Ultra-Smooth Cu Surface for High-Quality Graphene Synthesis

et al. 2018

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As grown graphene by chemical vapor deposition typically degrades greatly due to the presence of grain boundaries, which limit graphene’s excellent properties and integration into advanced applications. It has been demonstrated that there is a strong correlation between substrate morphology and graphene domain density. Here, we investigate how thermal annealing and electro-polishing affects the morphology of Cu foils. Ultra-smooth Cu surfaces can be achieved and maintained at elevated temperatures by electro-polishing after a pre-annealing treatment. This technique has shown to be more effective than just electro-polishing the Cu substrate without pre-annealing. This may be due to the remaining dislocations and point defects within the Cu bulk material moving to the surface when the Cu is heated. Likewise, a pre-annealing step may release them. Graphene grown on annealed electro-polished Cu substrates show a better quality in terms of lower domain density and higher layer uniformity than those grown on Cu substrates with only annealing or only electro-polishing treatment.

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“…It has been reported that graphene domain density and thickness uniformity are correlated to the surface roughness of the Cu substrate [ 12 , 23 , 34 , 38 ]. From Fig.…”

Section: Resultsmentioning

confidence: 99%

Preparation of Ultra-Smooth Cu Surface for High-Quality Graphene Synthesis

et al. 2018

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“…RTCVD is one of the possible methods based on rapid thermal process [28] . First, a copper foil is electro-polished, and then, it is cleaned with acetone and deionized water to remove the organic contamination.…”

Section: Methodsmentioning

confidence: 99%

“…The graphene sample is prepared based on a CVD method, where the large-area and high crystalline graphene film can be synthesized. RTCVD is one of the possible methods based on rapid thermal process [28] . First, a copper foil is electro-polished, and then, it is cleaned with acetone and deionized water to remove the organic contamination.…”

Section: Methodsmentioning

confidence: 99%

Large-area suspended graphene as a laser target to produce an energetic ion beam

Khasanah

Bolouki

Huang

et al. 2017

High Pow Laser Sci Eng

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Proton radiography is a key diagnostics to measure and image the electric/magnetic field in laser-produced plasmas. A thin solid target is irradiated with an intense laser pulse to produce a proton beam. The accelerated proton can achieve higher energy with thinner target. In order to produce an extremely thin target, we have developed a large-area suspended graphene as a laser target for energetic ion sources. We describe the manufacturing process of the suspended graphene, and show the results of quality evaluations.

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“…[ 112 ] Long time annealing in hydrogen gas or preoxidation of Cu foil has also been demonstrated to be effective to scavenge subsurface carbon contamination in the Cu foil. [ 20,113–115 ] Another problem that existed in the CVD‐grown graphene film is the abundance of wrinkles or folds caused by the large mismatch upon thermal contraction between Cu foil and graphene which would compromise the electrical and thermal conductivity. Moreover, wafer‐scale single‐crystal AB‐stacked bilayer graphene film which exhibits tunable bandgap under the external electric field has not been realized on Cu substrates.…”

Section: Growth On Single‐crystal Transition Metal Substratesmentioning

confidence: 99%

Substrate Engineering for CVD Growth of Single Crystal Graphene

et al. 2021

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Single crystal graphene (SCG) has attracted enormous attention for its unique potential for next‐generation high‐performance optoelectronics. In the absence of grain boundaries, the exceptional intrinsic properties of graphene are preserved by SCG. Currently, chemical vapor deposition (CVD) has been recognized as an effective method for the large‐scale synthesis of graphene films. However, polycrystalline films are usually obtained and the present grain boundaries compromise the carrier mobility, thermal conductivity, optical properties, and mechanical properties. The scalable and controllable synthesis of SCG is challenging. Recently, much attention has been attracted by the engineering of large‐size single‐crystal substrates for the epitaxial CVD growth of large‐area and high‐quality SCG films. In this article, a comprehensive and comparative review is provided on the selection and preparation of various single‐crystal substrates for CVD growth of SCG under different conditions. The growth mechanisms, current challenges, and future development and perspectives are discussed.

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Nucleation and growth dynamics of graphene on oxygen exposed copper substrate

Cited by 37 publications

References 22 publications

Preparation of Ultra-Smooth Cu Surface for High-Quality Graphene Synthesis

Preparation of Ultra-Smooth Cu Surface for High-Quality Graphene Synthesis

Large-area suspended graphene as a laser target to produce an energetic ion beam

Substrate Engineering for CVD Growth of Single Crystal Graphene

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