Raman Spectroscopy of Graphene

Wu, Juanxiaa; Xu, Hua; Zhang, Jin

doi:10.6023/a13090936

Cited by 113 publications

(64 citation statements)

References 49 publications

(76 reference statements)

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“…Two sets of molecules were elaborately selected to investigate the influence of the molecular energy levels and structures on GERS. The molecules in the first group had similar molecular structures but different energy level, including copper phthalocyanine (CuPc), zinc phthalocyanine (ZnPc), and Copper(II)1,2, 3,4,8,9,10,11,15,16,17,18,22,23,24,25exadecafluoro-29H,31H-phthalocyanine (F16CuPc) (Fig. 9b).…”

Section: Pure Graphene As Sers Substratesmentioning

confidence: 99%

Recent progress in the applications of graphene in surface-enhanced Raman scattering and plasmon-induced catalytic reactions

et al. 2015

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Graphene continues to attract tremendous interest, owing to its excellent optical and electronic properties. On the basis of its unique features, graphene has been employed in the ever-expanding research fields. Surface-enhanced Raman scattering (SERS) may be one of the significant applied fields where graphene can make a difference. Since its discovery, SERS technique has been capable of ultra sensitively detecting chemical and biological molecules at very low concentration, even at single molecule level, but some problems, such as irreproducible SERS signals, should be overcome before practical application on spectra analysis. Graphene can be a promising candidate to make up the deficiency of conventional metal SERS substrate. Furthermore, graphene, serving as the enhancement material, is usually deemed as a chemically inert substance to isolate the interactions between metal and probe molecules. While, irradiated by laser, structure changes of graphene under specific conditions and the contributions of its high electron mobility in plasmoninduced catalytic reactions are often ignored. In this review, we mainly focus on the state-of-the-art applications of graphene in the fields of SERS and laser-induced catalytic reactions. The advances of informative Raman spectra of graphene are firstly reviewed. Then, the graphene related SERS substrates, including graphene-enhanced Raman scattering (GERS) and graphene-mediated SERS (G-SERS), are summarized. We finally highlight the catalytic reactions occurring on graphene itself and molecules adsorbed onto graphene upon laser irradiation.In this review, we mainly focus on the state-of-the-art applications of graphene in the fields of Surfaceenhanced Raman scattering (SERS) and plasmon-induced catalytic reactions. The advances of informative Raman spectra of graphene are firstly reviewed. Then, the graphene related SERS substrates, including graphene-enhanced Raman scattering (GERS) and graphene-mediated SERS (G-SERS), are summarized. We finally highlight the catalytic reactions occurring on graphene itself and molecules adsorbed onto graphene upon laser irradiation.

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Section: Pure Graphene As Sers Substratesmentioning

confidence: 99%

Recent progress in the applications of graphene in surface-enhanced Raman scattering and plasmon-induced catalytic reactions

et al. 2015

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“…The downshift of ω G followed a 1/ n dependence on the number of layers n without an obvious change in lineshape [26]. For few-layer-thick graphene samples, the relationship can be written as an empirical formula [27]:

ω_{normalG} false(n false) = ω_{normalG} false(normal∞ false) + \frac{β}{n} β \approx 5.5 c m^{- 1},

where ω G ( n ) is the wave number of few-layer-thick graphene samples, ω G (∞) the wavenumber of graphite and n the number of graphene layers. We measured the wave number of the G peak of graphite at 1581.0 cm −1 by laser spectroscopy at 531 nm.…”

Section: Resultsmentioning

confidence: 99%

Room-temperature excitonic emission with a phonon replica from graphene nanosheets deposited on Ni-nanocrystallites/Si-nanoporous pillar array

Tang

et al. 2018

R. Soc. open sci.

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Graphene nanosheets (GNSs) were grown on a Si nanoporous pillar array (Si-NPA) via chemical vapour deposition, using a thin layer of pre-deposited Ni nanocrystallites as catalyst. GNSs were determined to be of high quality and good dispersivity, with a typical diameter size of 15 × 8 nm. Light absorption measurements showed that GNSs had an absorption band edge at 3.3 eV. They also showed sharp and regular excitonic emitting peaks in the ultraviolet and visible region (2.06–3.6 eV). Moreover, phonon replicas with long-term stability appeared with the excitonic peaks at room temperature. Temperature-dependent photoluminescence from the GNSs revealed that the excitonic emission derived from free and bound excitonic recombination. A physical model based on band energy theory was constructed to analyse the carrier transport of GNSs. The Ni nanocrystallites on Si-NPA, which acted as a metal-enhanced fluorescence substrate, were supposed to accelerate the excitonic recombination of GNSs and enhanced the measured emission intensity. Results of this study would be valuable in determining the luminescence mechanism of GNSs and could be applied in real-world optoelectronic devices.

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“…The above advantages make graphene applicable in broad potential fields, including micro-nano electronic devices, optoelectronic detectors, structural and functional composite materials, energy storage and so on [5].…”

Section: Graphenementioning

confidence: 99%

“…If carrier concentration becomes high, the G peak blue-shifts and half-width narrows. 2D peak represents the degree of graphitization, with the increase of doping concentration and defects, intensity of the 2D peak weakened [5,32].…”

Section: Applications Of Graphene In Sers Raman Spectra Of Graphenementioning

confidence: 99%

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Application of Graphene in Surface-Enhanced Raman Spectroscopy

Chang¹,

Xing²,

Zhang³

2017

Nano BioMed ENG

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Since the two-dimension structural graphene was discovered in 2004, the researches involved in graphene have and will continue to develop actively because of the excellent properties of graphene. Raman spectroscopy is a quick and precise characterization technique for investigating material properties in material science. Meanwhile, surface-enhanced Raman scattering (SERS) consumingly impacts on surface science owing to its extremely high sensitivity at single molecule level. However, SERS has not been an expected powerful analytical technique due to a variety of technical limitations. Here we briefly review some critical progresses in the development of surface-enhanced Raman scattering (SERS) and various applications of graphene in SERS in recent years.

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Raman Spectroscopy of Graphene

Cited by 113 publications

References 49 publications

Recent progress in the applications of graphene in surface-enhanced Raman scattering and plasmon-induced catalytic reactions

Recent progress in the applications of graphene in surface-enhanced Raman scattering and plasmon-induced catalytic reactions

Room-temperature excitonic emission with a phonon replica from graphene nanosheets deposited on Ni-nanocrystallites/Si-nanoporous pillar array

Application of Graphene in Surface-Enhanced Raman Spectroscopy

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