Phonon-Assisted Electroluminescence from Metallic Carbon Nanotubes and Graphene

Essig, Stephanie; Marquardt, Christoph; Vijayaraghavan, Aravind; Ganzhorn, Marc; Dehm, Simone; Hennrich, Frank; Ou, Fung Suong; Green, Alexander A.; Sciascia, Calogero; Bonaccorso, Francesco; Bohnen, K.‐P.; Löhneysen, H. v.; Kappes, Manfred M.; Ajayan, Pulickel M.; Hersam, Mark C.; Ferrari, Andrea C.; Krupke, Ralph

doi:10.1021/nl9039795

Cited by 78 publications

(72 citation statements)

References 36 publications

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“…This broadband non linear-PL arises from recombination of a distribution of non-equilibrium electrons and holes, generated by rapid scattering between photo-excited carriers after optical excitation 15 . It scales with the number of layers and can be used as a quantitative imaging tool, as well as to reveal the hot electron-hole plasma dynamics 15 , Fig 1c. Electroluminescence was also recently reported in pristine graphene 31 . Although the power conversion efficiency is lower than carbon nanotubes (CNTs), this could lead to novel emitting devices based entirely on graphene.…”

Section: Luminescencementioning

confidence: 58%

Graphene photonics and optoelectronics

et al. 2010

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The richness of optical and electronic properties of graphene attracts enormous interest. Graphene has high mobility and optical transparency, in addition to flexibility, robustness and environmental stability. So far, the main focus has been on fundamental physics and electronic devices. However, we believe its true potential to be in photonics and optoelectronics, where the combination of its unique optical and electronic properties can be fully exploited, even in the absence of a bandgap, and the linear dispersion of the Dirac electrons enables ultra-wide-band tunability. The rise of graphene in photonics and optoelectronics is shown by several recent results, ranging from solar cells and light emitting devices, to touch screens, photodetectors and ultrafast lasers. Here we review the state of the art in this emerging field.

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Section: Luminescencementioning

confidence: 58%

Graphene photonics and optoelectronics

et al. 2010

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“…17 The observation of visible electroluminescence from multilayer graphene systems has also been reported by several authors. 18 Biswas et al 19 have reported tunable electroluminescence from planar graphene/SiO 2 structures. Dong et al 20 have reported blue luminescence with a high quantum yield.…”

Section: Introductionmentioning

confidence: 99%

Laser-induced white-light emission from graphene ceramics–opening a band gap in graphene

et al. 2015

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Recent theoretical and experimental studies have indicated the existence of a new stable phase of carbon with mixed sp 2 and sp 3 hybridized bonds-diaphite. Such a two-layered structure with sp 2 /sp 3 bonds may be observed after the photostimulation of highly oriented pyrolytic graphene with femtosecond laser pulses. This hidden multistability of graphene may be used to create a semiconducting phase immersed in the semimetallic continuum, resulting in bandgap opening. We demonstrate that bandgap opening and light emission from graphene is possible using continuous-wave laser beams with wavelengths from the visible (405 nm) to the near-infrared range (975 nm). We demonstrate that without the application of cooling, the effective temperature of the emitting sample remains lower than 900 K, which is far below the value predicted by the theory of black-body radiation. Moreover, light emission from a graphene sample may be observed at temperatures as low as 10 K.

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“…Only 2.3% of incident visible light is adsorbed by monolayer graphene, and the absorption of light linearly increases with the number of layers [76]. According to Loh et al [74], the most notable and unexpected consequence of the atomic structure of RGO is the observation of near-infrared, visible, and ultraviolet fluorescence [77], [78]. Furthermore, graphene can improve the performance of optical sensors because of its enhanced ability to adsorb biomolecules, and the higher density of states improves surface electromagnetic wave propagation.…”

Section: Optical Propertiesmentioning

confidence: 99%

Graphene-Based Glucose Sensors: A Brief Review

Wang

Liu

2015

IEEE Trans.on Nanobioscience

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Abstract-Since the existence of graphene, a material only a single atomic layer thick, was demonstrated about a decade ago, it has caught the attention of researchers worldwide. This paper begins with a historical overview of graphene since its discovery, in 2004, and focuses on a citation-weighted review of graphene-based sensors developed for the detection of biological targets. Based on this statistical analysis, we categorize recent developments in graphene-based biosensors (GBBs) as optimized for detecting 1) proteins, 2) nucleic acids, 3) carbohydrates, or 4) compounds generated by metabolic processes. Existing detection methods employed by these sensors include electrical, electrochemical, and photonic approaches with respect to detecting labeled (or enzyme-assisted) and label-free (or enzyme-free) probe structures. Herein, we focus on graphene-based glucose sensors because glucose-monitoring technology is extremely important in the management of diabetes and many practical examples of these carbohydrate sensors have been developed using the aforementioned detection methods.

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Phonon-Assisted Electroluminescence from Metallic Carbon Nanotubes and Graphene

Cited by 78 publications

References 36 publications

Graphene photonics and optoelectronics

Graphene photonics and optoelectronics

Laser-induced white-light emission from graphene ceramics–opening a band gap in graphene

Graphene-Based Glucose Sensors: A Brief Review

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