J. Semicond. > Volume 40 > Issue 6 > Article Number: 062006

Broadband absorption of graphene from magnetic dipole resonances in hybrid nanostructure

Xiaowei Jiang 1, 2, ,

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Abstract: As emerging new material, graphene has inspired great research interest. However, most of the studies focused on how to improve the absorption efficiency of graphene, but payed little attention on broadening absorption bandwidth while ensuring high absorption efficiency. In this work, we proposed a hybrid nanostructure, which not only can improve absorption efficiency but also can increase absorption bandwidth. The proposed hybrid nanostructure consists of a monolayer graphene sandwiched between three Ag gratings with different widths and a SiO2 spacer on a Ag substrate, these three gratings and substrate can excite three independent magnetic dipole resonances. In our calculations, we numerically demonstrate the proposed hybrid structure can achieve graphene absorption bandwidth of 0.311 μm in near-infrared region with absorption exceeding 30% . We also studied absorption peaks dependence on gratings widths and SiO2 spacer thickness, and explained the results using physical mechanism. Our research can provide a theoretical guidance for future device preparation.

Key words: grapheneabsorption bandwidthmagnetic dipolegrating

Abstract: As emerging new material, graphene has inspired great research interest. However, most of the studies focused on how to improve the absorption efficiency of graphene, but payed little attention on broadening absorption bandwidth while ensuring high absorption efficiency. In this work, we proposed a hybrid nanostructure, which not only can improve absorption efficiency but also can increase absorption bandwidth. The proposed hybrid nanostructure consists of a monolayer graphene sandwiched between three Ag gratings with different widths and a SiO2 spacer on a Ag substrate, these three gratings and substrate can excite three independent magnetic dipole resonances. In our calculations, we numerically demonstrate the proposed hybrid structure can achieve graphene absorption bandwidth of 0.311 μm in near-infrared region with absorption exceeding 30% . We also studied absorption peaks dependence on gratings widths and SiO2 spacer thickness, and explained the results using physical mechanism. Our research can provide a theoretical guidance for future device preparation.

Key words: grapheneabsorption bandwidthmagnetic dipolegrating



References:

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Lu H, Cumming B P, Gu M. Highly efficient plasmonic enhancement of graphene absorption at telecommunication wavelengths. Opt Lett, 2015, 40(15), 3647

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Zhao W, Shi K, Lu Z. Greatly enhanced ultrabroadband light absorption by monolayer graphene. Opt Lett, 2013, 38(21), 4342

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Xu D, Yu X, Yang L, et al. Design and photovoltaic properties of graphene/silicon solar cell. J Electron Mater, 2018, 47(9), 1

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Xu H, Han X, Dai X, et al. High detectivity and transparent few-layer MoS2/glassy-graphene heterostructure photodetectors. Adv Maters, 2018, 30(13), e1706561

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Zhao B, Zhao J M, Zhang Z M. Resonance enhanced absorption in a graphene monolayer using deep metal gratings. J Opt Soc Am B, 2015, 32(6), 1176

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Nulli S A, Ukhtary M S, Saito R. Significant enhancement of light absorption in undoped graphene using dielectric multilayer system. Appl Phys Lett, 2018, 112(7), 073101

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Cai Y, Zhu J, Liu Q H. Tunable enhanced optical absorption of graphene using plasmonic perfect absorbers. Appl Phys Lett, 2015, 106(4), 043105

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Liu B, Tang C, Chen J, et al. Multiband and broadband absorption enhancement of monolayer graphene at optical frequencies from multiple magnetic dipole resonances in metamaterials. Nanoscale Res Lett, 2018, 13(1), 153

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Pirruccio G, Martín M L, Lozano G, et al. Coherent and broadband enhanced optical absorption in graphene. Acs Nano, 2013, 7(6), 4810

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Shi X, Ge L, Wen X, et al. Broadband light absorption in graphene ribbons by canceling strong coupling at subwavelength scale. Opt Express, 2016, 24(23), 26357

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Gao F, Zhu Z, Xu W, et al. Broadband wave absorption in single-layered and nonstructured graphene based on far-field interaction effect. Opt Express, 2017, 25(9), 9579

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Agarwal S, Prajapati Y K. Broadband and polarization-insensitive helix metamaterial absorber using graphene for terahertz region. Appl Phys A, 2016, 122(6), 561

[19]

Chen H, Zhang X X, Wang H, et al. Near-infrared absorption of graphene-metal nanostructure based on magnetic polaritons. Acta Physica Sinica, 2018, 67(11), 118101

[20]

Gao J, Sang T, Li J L, et al. Double-channel absorption enhancement of graphene using narrow groove metal grating. Acta Physica Sinica, 2018, 67(18), 184210

[21]

Liu B, Tang C J, Chen J, et al. Dual-band light absorption enhancement of monolayer graphene from surface plasmon polaritons and magnetic dipole resonances in metamaterials. Opt Express, 2017, 25(10), 12061

[22]

Sang T, Wang R, Li J, et al. Approaching total absorption of graphene strips using a c-Si subwavelength periodic membrane. Opt Commun, 2018, 413, 255

[23]

Zhao Z, Li G, Yu F, et al. Sub-wavelength grating enhanced ultra-narrow graphene perfect absorber. Plasmonics, 2018, 13(5), 1

[24]

He X, Shi W, Zhao Z Y. Graphene-supported tunable near-IR metamaterials. Opt Lett, 2015, 40(2), 178

[25]

Zhang L, Tang L, Wei W, et al. Enhanced near-infrared absorption in graphene with multilayer metal-dielectric-metal nanostructure. Opt Express, 2016, 24(18), 20002

[1]

Zhao B, Zhao J M, Zhang Z M. Enhancement of near-infrared absorption in graphene with metal gratings. Appl Phys Lett, 2014, 105(3), 031905

[2]

Nair R R, Blake P, Grigorenko A N, et al. Fine structure constant defines visual transparency of graphene. Science, 2008, 320(5881), 1308

[3]

Lee C, Wei X, Kysar J W, et al. Measurement of the elastic properties and intrinsic strength of monolayer graphene. Science, 2008, 321(5887), 385

[4]

Xia F, Yan H, Avouris P. The interaction of light and graphene: basics, devices, and applications. Proce IEEE, 2013, 101(7), 1717

[5]

Furchi M, Urich A, Pospischil A, et al. Microcavity-integrated graphene photodetector. Nano Lett, 2012, 12(6), 2773

[6]

Lu H, Cumming B P, Gu M. Highly efficient plasmonic enhancement of graphene absorption at telecommunication wavelengths. Opt Lett, 2015, 40(15), 3647

[7]

Zhao W, Shi K, Lu Z. Greatly enhanced ultrabroadband light absorption by monolayer graphene. Opt Lett, 2013, 38(21), 4342

[8]

Xu D, Yu X, Yang L, et al. Design and photovoltaic properties of graphene/silicon solar cell. J Electron Mater, 2018, 47(9), 1

[9]

Xu H, Han X, Dai X, et al. High detectivity and transparent few-layer MoS2/glassy-graphene heterostructure photodetectors. Adv Maters, 2018, 30(13), e1706561

[10]

Liu J T, Liu N H, Li J, et al. Enhanced absorption of graphene with one-dimensional photonic crystal. Appl Phys Lett, 2012, 101(5), 666

[11]

Zhao B, Zhao J M, Zhang Z M. Resonance enhanced absorption in a graphene monolayer using deep metal gratings. J Opt Soc Am B, 2015, 32(6), 1176

[12]

Nulli S A, Ukhtary M S, Saito R. Significant enhancement of light absorption in undoped graphene using dielectric multilayer system. Appl Phys Lett, 2018, 112(7), 073101

[13]

Cai Y, Zhu J, Liu Q H. Tunable enhanced optical absorption of graphene using plasmonic perfect absorbers. Appl Phys Lett, 2015, 106(4), 043105

[14]

Liu B, Tang C, Chen J, et al. Multiband and broadband absorption enhancement of monolayer graphene at optical frequencies from multiple magnetic dipole resonances in metamaterials. Nanoscale Res Lett, 2018, 13(1), 153

[15]

Pirruccio G, Martín M L, Lozano G, et al. Coherent and broadband enhanced optical absorption in graphene. Acs Nano, 2013, 7(6), 4810

[16]

Shi X, Ge L, Wen X, et al. Broadband light absorption in graphene ribbons by canceling strong coupling at subwavelength scale. Opt Express, 2016, 24(23), 26357

[17]

Gao F, Zhu Z, Xu W, et al. Broadband wave absorption in single-layered and nonstructured graphene based on far-field interaction effect. Opt Express, 2017, 25(9), 9579

[18]

Agarwal S, Prajapati Y K. Broadband and polarization-insensitive helix metamaterial absorber using graphene for terahertz region. Appl Phys A, 2016, 122(6), 561

[19]

Chen H, Zhang X X, Wang H, et al. Near-infrared absorption of graphene-metal nanostructure based on magnetic polaritons. Acta Physica Sinica, 2018, 67(11), 118101

[20]

Gao J, Sang T, Li J L, et al. Double-channel absorption enhancement of graphene using narrow groove metal grating. Acta Physica Sinica, 2018, 67(18), 184210

[21]

Liu B, Tang C J, Chen J, et al. Dual-band light absorption enhancement of monolayer graphene from surface plasmon polaritons and magnetic dipole resonances in metamaterials. Opt Express, 2017, 25(10), 12061

[22]

Sang T, Wang R, Li J, et al. Approaching total absorption of graphene strips using a c-Si subwavelength periodic membrane. Opt Commun, 2018, 413, 255

[23]

Zhao Z, Li G, Yu F, et al. Sub-wavelength grating enhanced ultra-narrow graphene perfect absorber. Plasmonics, 2018, 13(5), 1

[24]

He X, Shi W, Zhao Z Y. Graphene-supported tunable near-IR metamaterials. Opt Lett, 2015, 40(2), 178

[25]

Zhang L, Tang L, Wei W, et al. Enhanced near-infrared absorption in graphene with multilayer metal-dielectric-metal nanostructure. Opt Express, 2016, 24(18), 20002

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X W Jiang, Broadband absorption of graphene from magnetic dipole resonances in hybrid nanostructure[J]. J. Semicond., 2019, 40(6): 062006. doi: 10.1088/1674-4926/40/6/062006.

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History

Manuscript received: 07 March 2019 Manuscript revised: 25 March 2019 Online: Accepted Manuscript: 10 April 2019 Uncorrected proof: 29 May 2019 Published: 05 June 2019

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