Dual-gated bilayer graphene hot-electron bolometer

Jun Yan; M. H. Kim; J. A. Elle; A. B. Sushkov; G. S. Jenkins; H. M. Milchberg; M. S. Fuhrer; H. D. Drew

doi:10.1038/nnano.2012.88

Dual-gated bilayer graphene hot-electron bolometer

Jun Yan, M. H. Kim, J. A. Elle, A. B. Sushkov, G. S. Jenkins, H. M. Milchberg, M. S. Fuhrer, H. D. Drew

Physics

Research output: Contribution to journal › Article › peer-review

385 Scopus citations

Abstract

Graphene is an attractive material for use in optical detectors because it absorbs light from mid-infrared to ultraviolet wavelengths with nearly equal strength. Graphene is particularly well suited for bolometers-devices that detect temperature-induced changes in electrical conductivity caused by the absorption of light-because its small electron heat capacity and weak electron-phonon coupling lead to large light-induced changes in electron temperature. Here, we demonstrate a hot-electron bolometer made of bilayer graphene that is dual-gated to create a tunable bandgap and electron- temperature-dependent conductivity. The bolometer exhibits a noise-equivalent power (33 fW Hz-1/2 at 5 K) that is several times lower, and intrinsic speed (>1 GHz at 10 K) three to five orders of magnitude higher than commercial silicon bolometers and superconducting transition-edge sensors at similar temperatures.

Original language	English
Pages (from-to)	472-478
Number of pages	7
Journal	Nature Nanotechnology
Volume	7
Issue number	7
DOIs	https://doi.org/10.1038/nnano.2012.88
State	Published - Jul 2012

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title = "Dual-gated bilayer graphene hot-electron bolometer",

abstract = "Graphene is an attractive material for use in optical detectors because it absorbs light from mid-infrared to ultraviolet wavelengths with nearly equal strength. Graphene is particularly well suited for bolometers-devices that detect temperature-induced changes in electrical conductivity caused by the absorption of light-because its small electron heat capacity and weak electron-phonon coupling lead to large light-induced changes in electron temperature. Here, we demonstrate a hot-electron bolometer made of bilayer graphene that is dual-gated to create a tunable bandgap and electron- temperature-dependent conductivity. The bolometer exhibits a noise-equivalent power (33 fW Hz-1/2 at 5 K) that is several times lower, and intrinsic speed (>1 GHz at 10 K) three to five orders of magnitude higher than commercial silicon bolometers and superconducting transition-edge sensors at similar temperatures.",

author = "Jun Yan and Kim, {M. H.} and Elle, {J. A.} and Sushkov, {A. B.} and Jenkins, {G. S.} and Milchberg, {H. M.} and Fuhrer, {M. S.} and Drew, {H. D.}",

note = "Funding Information: The authors thank J. Melngailis, D. E. Prober, H. Moseley and A. F. Heinz for discussions. This work was supported by IARPA, the ONR MURI programme and the NSF (grants DMR-0804976 and DMR-1105224) and in part by the NSF MRSEC (grant DMR-0520471). J.A.E. and H.M.M. acknowledge the support of the NSF.",

year = "2012",

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doi = "10.1038/nnano.2012.88",

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AU - Yan, Jun

AU - Kim, M. H.

AU - Elle, J. A.

AU - Sushkov, A. B.

AU - Jenkins, G. S.

AU - Milchberg, H. M.

AU - Fuhrer, M. S.

AU - Drew, H. D.

N1 - Funding Information: The authors thank J. Melngailis, D. E. Prober, H. Moseley and A. F. Heinz for discussions. This work was supported by IARPA, the ONR MURI programme and the NSF (grants DMR-0804976 and DMR-1105224) and in part by the NSF MRSEC (grant DMR-0520471). J.A.E. and H.M.M. acknowledge the support of the NSF.

PY - 2012/7

Y1 - 2012/7

N2 - Graphene is an attractive material for use in optical detectors because it absorbs light from mid-infrared to ultraviolet wavelengths with nearly equal strength. Graphene is particularly well suited for bolometers-devices that detect temperature-induced changes in electrical conductivity caused by the absorption of light-because its small electron heat capacity and weak electron-phonon coupling lead to large light-induced changes in electron temperature. Here, we demonstrate a hot-electron bolometer made of bilayer graphene that is dual-gated to create a tunable bandgap and electron- temperature-dependent conductivity. The bolometer exhibits a noise-equivalent power (33 fW Hz-1/2 at 5 K) that is several times lower, and intrinsic speed (>1 GHz at 10 K) three to five orders of magnitude higher than commercial silicon bolometers and superconducting transition-edge sensors at similar temperatures.

AB - Graphene is an attractive material for use in optical detectors because it absorbs light from mid-infrared to ultraviolet wavelengths with nearly equal strength. Graphene is particularly well suited for bolometers-devices that detect temperature-induced changes in electrical conductivity caused by the absorption of light-because its small electron heat capacity and weak electron-phonon coupling lead to large light-induced changes in electron temperature. Here, we demonstrate a hot-electron bolometer made of bilayer graphene that is dual-gated to create a tunable bandgap and electron- temperature-dependent conductivity. The bolometer exhibits a noise-equivalent power (33 fW Hz-1/2 at 5 K) that is several times lower, and intrinsic speed (>1 GHz at 10 K) three to five orders of magnitude higher than commercial silicon bolometers and superconducting transition-edge sensors at similar temperatures.

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JO - Nature Nanotechnology

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Dual-gated bilayer graphene hot-electron bolometer

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