Analysis of graphene films grown on copper foil at 845 °C by intermediate pressure chemical vapor deposition

Nalini, Savitha; Thomas, Subin; Jayaraj, M. K.; Kumar, K. Rajeev

doi:10.1088/2053-1591/aadec4

Cited by 7 publications

(2 citation statements)

References 48 publications

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“…Chemical vapour deposition of graphene was done in a homemade CVD system [20]. The substrate used in this study was 25 µm thick copper foil (99.98%), purchased from Alfa Aesar.…”

Section: Methodsmentioning

confidence: 99%

Chemical vapour deposited graphene-mediated enhanced SERS performance in silver nanostructures

Nalini

Thomas

Anju

et al. 2023

Materials Science and Technology

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This work demonstrates how chemical vapour deposited monolayer graphene enhances the SERS activity in a conventional plasmonic substrate. The single-layer graphene is evidenced by various spectroscopic analyses. A thin coating of silver on graphene/SiO2/Si substrate serves as the graphene-mediated SERS (GSERS) platform, which offers a detection limit (LOD) of 10−14 M and an enhancement factor of 9.48 × 108 for the R6G molecule. The performance of the GSERS substrate is superior to that of the substrate without graphene, which has a LOD of 10−10 M only. The detection of low concentrations of Sudan-I is also demonstrated with the GSERS substrate. A highly sensitive simple two-stage SERS substrate made of high-quality graphene film is the crowning achievement of this study.

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“…Chemical vapour deposition of graphene was done in a homemade CVD system [20]. The substrate used in this study was 25 µm thick copper foil (99.98%), purchased from Alfa Aesar.…”

Section: Methodsmentioning

confidence: 99%

Chemical vapour deposited graphene-mediated enhanced SERS performance in silver nanostructures

Nalini

Thomas

Anju

et al. 2023

Materials Science and Technology

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“…Two types of samples were considered for texture study: (1) unpolished copper foil (bare Cu) and (2) annealed polished copper foil with graphene coating (processed Cu). The graphene deposition was done at 950°C and 20 mbar pressure using a home-built CVD system [32]. Polished copper foils of 1×1 cm were used as the substrate.…”

Section: Texture Analysis and Cvd Of Graphenementioning

confidence: 99%

Nonlinear optical absorption and asymmetric charge carrier conduction in chemical vapor deposited single-layer graphene

Thomas

Nalini

Jayaraj

et al. 2020

Mater. Res. Express

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In this work, we report the nonlinear optical absorption and asymmetric charge carrier conduction in single layer graphene films deposited by chemical vapor deposition (CVD) technique on copper foils with pretreated surface. XRD texture and pole figure analysis of the substrate are utilized for the visualization of the effect of the pretreatment on the substrate. The synthesised graphene is employed as a channel layer in a back gated field-effect transistor and the asymmetric behavior of charge carriers is analyzed. Nonlinear optical response of graphene is recorded after transferring it onto a quartz substrate. Open aperture Z-scan technique yields a nonlinear absorption coefficient of 5.34×10 6 cm GW −1 . The film exhibits saturable absorption in the visible range with a saturation intensity as low as 0.134 GW cm −2 .

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A review of bipolar plates materials and graphene coating degradation mechanism in proton exchange membrane fuel cell

Okonkwo

Emori

Uzoma

et al. 2021

Intl J of Energy Research

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Analysis of graphene films grown on copper foil at 845 °C by intermediate pressure chemical vapor deposition

Cited by 7 publications

References 48 publications

Chemical vapour deposited graphene-mediated enhanced SERS performance in silver nanostructures

Chemical vapour deposited graphene-mediated enhanced SERS performance in silver nanostructures

Nonlinear optical absorption and asymmetric charge carrier conduction in chemical vapor deposited single-layer graphene

A review of bipolar plates materials and graphene coating degradation mechanism in proton exchange membrane fuel cell

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