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Graphene hot-electron light bulb: incandescence from hBN-encapsulated graphene in air

The excellent electronic and mechanical properties of graphene allow it to sustain very large currents, enabling its incandescence through Joule heating in suspended devices. Although interesting scientifically and promising technologically, this process is unattainable in ambient environment, becau... Full description

Journal Title: arXiv.org Oct 26, 2017
Main Author: Šiškins, Makars
Other Authors: Mullan, Ciaran , Yin, Jun , Kravets, Vasyl , Kozikov, Aleksey , Ozdemir, Servet , Alhazmi, Manal , Holwill, Matthew , Watanabe, Kenji , Taniguchi, Takashi , Ghazaryan, Davit , Novoselov, Kostya , Fal'Ko, Vladimir , Mishchenko, Artem
Format: Electronic Article Electronic Article
Language: English
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ID: DOI: 10.1088/2053-1583/aa97b5
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recordid: proquest2076991481
title: Graphene hot-electron light bulb: incandescence from hBN-encapsulated graphene in air
format: Article
creator:
  • Šiškins, Makars
  • Mullan, Ciaran
  • Yin, Jun
  • Kravets, Vasyl
  • Kozikov, Aleksey
  • Ozdemir, Servet
  • Alhazmi, Manal
  • Holwill, Matthew
  • Watanabe, Kenji
  • Taniguchi, Takashi
  • Ghazaryan, Davit
  • Novoselov, Kostya
  • Fal'Ko, Vladimir
  • Mishchenko, Artem
subjects:
  • Light Emission
  • Filaments
  • Encapsulation
  • Ohmic Dissipation
  • Incandescence
  • Graphene
  • Oxidation Resistance
  • Optoelectronics
  • Heterostructures
  • Mechanical Properties
  • Resistance Heating
  • Photonics
  • Boron Nitride
  • Luminaires
  • Thermal Emission
  • High Temperature
ispartof: arXiv.org, Oct 26, 2017
description: The excellent electronic and mechanical properties of graphene allow it to sustain very large currents, enabling its incandescence through Joule heating in suspended devices. Although interesting scientifically and promising technologically, this process is unattainable in ambient environment, because graphene quickly oxidises at high temperatures. Here, we take the performance of graphene-based incandescent devices to the next level by encapsulating graphene with hexagonal boron nitride (hBN). Remarkably, we found that the hBN encapsulation provides an excellent protection for hot graphene filaments even at temperatures well above 2000 K. Unrivalled oxidation resistance of hBN combined with atomically clean graphene/hBN interface allows for a stable light emission from our devices in atmosphere for many hours of continuous operation. Furthermore, when confined in a simple photonic cavity, the thermal emission spectrum is modified by a cavity mode, shifting the emission to the visible range spectrum. We believe our results demonstrate that hBN/graphene heterostructures can be used to conveniently explore the technologically important high-temperature regime and to pave the way for future optoelectronic applications of graphene-based systems.
language: eng
source:
identifier: DOI: 10.1088/2053-1583/aa97b5
fulltext: fulltext_linktorsrc
url: Link


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titleGraphene hot-electron light bulb: incandescence from hBN-encapsulated graphene in air
creatorŠiškins, Makars ; Mullan, Ciaran ; Yin, Jun ; Kravets, Vasyl ; Kozikov, Aleksey ; Ozdemir, Servet ; Alhazmi, Manal ; Holwill, Matthew ; Watanabe, Kenji ; Taniguchi, Takashi ; Ghazaryan, Davit ; Novoselov, Kostya ; Fal'Ko, Vladimir ; Mishchenko, Artem
contributorMishchenko, Artem (pacrepositoryorg)
ispartofarXiv.org, Oct 26, 2017
identifierDOI: 10.1088/2053-1583/aa97b5
subjectLight Emission ; Filaments ; Encapsulation ; Ohmic Dissipation ; Incandescence ; Graphene ; Oxidation Resistance ; Optoelectronics ; Heterostructures ; Mechanical Properties ; Resistance Heating ; Photonics ; Boron Nitride ; Luminaires ; Thermal Emission ; High Temperature
descriptionThe excellent electronic and mechanical properties of graphene allow it to sustain very large currents, enabling its incandescence through Joule heating in suspended devices. Although interesting scientifically and promising technologically, this process is unattainable in ambient environment, because graphene quickly oxidises at high temperatures. Here, we take the performance of graphene-based incandescent devices to the next level by encapsulating graphene with hexagonal boron nitride (hBN). Remarkably, we found that the hBN encapsulation provides an excellent protection for hot graphene filaments even at temperatures well above 2000 K. Unrivalled oxidation resistance of hBN combined with atomically clean graphene/hBN interface allows for a stable light emission from our devices in atmosphere for many hours of continuous operation. Furthermore, when confined in a simple photonic cavity, the thermal emission spectrum is modified by a cavity mode, shifting the emission to the visible range spectrum. We believe our results demonstrate that hBN/graphene heterostructures can be used to conveniently explore the technologically important high-temperature regime and to pave the way for future optoelectronic applications of graphene-based systems.
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titleGraphene hot-electron light bulb: incandescence from hBN-encapsulated graphene in air
descriptionThe excellent electronic and mechanical properties of graphene allow it to sustain very large currents, enabling its incandescence through Joule heating in suspended devices. Although interesting scientifically and promising technologically, this process is unattainable in ambient environment, because graphene quickly oxidises at high temperatures. Here, we take the performance of graphene-based incandescent devices to the next level by encapsulating graphene with hexagonal boron nitride (hBN). Remarkably, we found that the hBN encapsulation provides an excellent protection for hot graphene filaments even at temperatures well above 2000 K. Unrivalled oxidation resistance of hBN combined with atomically clean graphene/hBN interface allows for a stable light emission from our devices in atmosphere for many hours of continuous operation. Furthermore, when confined in a simple photonic cavity, the thermal emission spectrum is modified by a cavity mode, shifting the emission to the visible range spectrum. We believe our results demonstrate that hBN/graphene heterostructures can be used to conveniently explore the technologically important high-temperature regime and to pave the way for future optoelectronic applications of graphene-based systems.
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titleGraphene hot-electron light bulb: incandescence from hBN-encapsulated graphene in air
authorŠiškins, Makars ; Mullan, Ciaran ; Yin, Jun ; Kravets, Vasyl ; Kozikov, Aleksey ; Ozdemir, Servet ; Alhazmi, Manal ; Holwill, Matthew ; Watanabe, Kenji ; Taniguchi, Takashi ; Ghazaryan, Davit ; Novoselov, Kostya ; Fal'Ko, Vladimir ; Mishchenko, Artem
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abstractThe excellent electronic and mechanical properties of graphene allow it to sustain very large currents, enabling its incandescence through Joule heating in suspended devices. Although interesting scientifically and promising technologically, this process is unattainable in ambient environment, because graphene quickly oxidises at high temperatures. Here, we take the performance of graphene-based incandescent devices to the next level by encapsulating graphene with hexagonal boron nitride (hBN). Remarkably, we found that the hBN encapsulation provides an excellent protection for hot graphene filaments even at temperatures well above 2000 K. Unrivalled oxidation resistance of hBN combined with atomically clean graphene/hBN interface allows for a stable light emission from our devices in atmosphere for many hours of continuous operation. Furthermore, when confined in a simple photonic cavity, the thermal emission spectrum is modified by a cavity mode, shifting the emission to the visible range spectrum. We believe our results demonstrate that hBN/graphene heterostructures can be used to conveniently explore the technologically important high-temperature regime and to pave the way for future optoelectronic applications of graphene-based systems.
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