The enhancement of Hall mobility and conductivity of CVD graphene through radical doping and vacuum annealing

Pham, Phuong V.; Mishra, Anurag; Yeom, Geun Young

doi:10.1039/c7ra01330b

Cited by 32 publications

(21 citation statements)

References 36 publications

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“…The dry doping of graphene by low energy plasmas is an interesting, new, damage-free method [19][20][21][22][23][24]. The method could be applied to other plasma systems such as neutral beams or ion beams.…”

Section: Discussionmentioning

confidence: 99%

A Library of Doped-Graphene Images via Transmission Electron Microscopy

Pham

2018

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Much recent work has focused on improving the performance of graphene by various physical and chemical modification approaches. In particular, chemical doping of n-type and p-type dopants through substitutional and surface transfer strategies have been carried out with the aim of electronic and band-gap tuning. In this field, the visualization of (i) The intrinsic structure and morphology of graphene layers after doping by various chemical dopants, (ii) the formation of exotic and new chemical bonds at surface/interface between the graphene layers and the dopants is highly desirable. In this short review, recent advances in the study of doped-graphenes and of the n-type and p-type doping techniques through transmission electron microscopy (TEM) analysis and observation at the nanoscale will be addressed.

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Section: Discussionmentioning

confidence: 99%

A Library of Doped-Graphene Images via Transmission Electron Microscopy

Pham

2018

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“…Another method is graphene exfoliation. This type of method will inevitably lead to defects, but compared with CVD, defects result mainly from the oxidation and reduction process [ 61 ]. Various oxidizing agents and temperatures will have an impact on graphene.…”

Section: Preparation Of Graphene and Generation Of Defectsmentioning

confidence: 99%

A Review on Lattice Defects in Graphene: Types, Generation, Effects and Regulation

et al. 2017

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Graphene, having a perfect two-dimensional crystal structure, has many excellent features such as a high specific surface area, and extraordinary electrical, thermal and mechanical properties. However, during the production process, lattice defects will inevitably be produced. Therefore, the performance of graphene with various defects is much lower than its theoretical value. We summarize the major advances of research into graphene defects in engineering in this paper. Firstly, the main types and causes of defects in graphene are introduced. Secondly, the influence of different defects in graphene on the chemical, electronic, magnetic and mechanical properties is discussed. Also, the control methods of graphene defects are reviewed. Finally, we propose the future challenges and prospects for the study of the defects of graphene and other nano-carbon materials.

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“…By the mechanical graphite exfoliation utilizing the scotch tape in 2004 [1,2], an ultrathin graphene layer has discovered and emerged as the most promising nano-sized material with the amazing electronic properties [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Unfortunately, the conductive graphene with gapless characteristics limited its novel physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

Plasma-Related Graphene Etching: a Mini-Review

Pham¹

2019

Jour. Mater. Sci. Eng. Adv. Tech.

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Graphene has achieved an amazing interest from the science community through the world in term of multidisciplinary fields of nanotechnology owing to its outstanding mechanical, thermal, and physical characteristics. The plasmarelated etching of chemical vapor deposition (CVD) grown-graphene and graphene oxide (GO) utilizing different methods related to chemistry, physics, nanotechnology, and engineering are emerging as the "hot issue" for achieving the thinner graphene layer and cleaner surface in order to improve their electronics and optoelectronics in high performance device fabrication. The resided impurities and the high roughness surface due to the nature of graphene materials induced the deteriorating in its performance. Removing the impurities by surface cleaning or plasma-related graphene etching regarding layer-by-layer thinning method as the top-down lithography. In particular, the plasma-related graphene etching which is no inducing any damage for graphene lattice while maintaining the bonding-π of its, which affects conductivity will be attracting study and highly demand. This mini review will briefly address PHUONG VIET PHAM 92 the recent advances of etching technology based on emerging plasma strategies. From here, it could be used to apply similarly for the etching on other nanomaterials.

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The enhancement of Hall mobility and conductivity of CVD graphene through radical doping and vacuum annealing

Abstract: We report an innovated method for chlorine doping of graphene utilizing an inductively coupled plasma system.

Cited by 32 publications

References 36 publications

A Library of Doped-Graphene Images via Transmission Electron Microscopy

A Library of Doped-Graphene Images via Transmission Electron Microscopy

A Review on Lattice Defects in Graphene: Types, Generation, Effects and Regulation

Plasma-Related Graphene Etching: a Mini-Review

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