Graphene-based highly efficient and broadband solar absorber

Patel, Shobhit K.; Charola, Shreyas; Jani, Charmy; Ladumor, Mayurkumar; Parmar, Juveriya; Guo, Tianjing

doi:10.1016/j.optmat.2019.109330

Cited by 87 publications

(16 citation statements)

References 44 publications

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“…Metasurfaces based on subwavelength scale nanostructure absorb NIR by using Mie resonance. [4][5][6][7][8][9][10][11][12][13][14][15][16] However, the absorbed solar energy acts as with calculated results. The NIR-blocking effectiveness of the designed multilayer film exceeds those of previously-reported other technologies such as metasurfaces, D/M/Ds, thin-film structures and organic coatings by employing an extra TiO 2 back reflector layer.…”

Section: Introductionsupporting

confidence: 58%

“…NIR-blocking films have been developed using several techniques such as metasurface, [4][5][6][7][8][9][10][11][12][13][14][15][16] D/M/D films, [24][25][26][27][28] and thin films, [41][42][43] organic coatings [44][45][46][47][48][49][50][51] (Table 1). NIR blocking metasurfaces are divided into opaque and transparent types.…”

Section: R B B B B Ndmentioning

confidence: 99%

“…Metasurfaces based on subwavelength scale nanostructure absorb NIR by using Mie resonance. [ 4–16 ] However, the absorbed solar energy acts as an additional heating source, which can reduce cooling effects. The thick metal film can block NIR by reflection rather than absorption.…”

Section: Introductionmentioning

confidence: 99%

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Photonic Multilayer Structure Induced High Near‐Infrared (NIR) Blockage as Energy‐Saving Window

Kim

Baek

Park

et al. 2021

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Energy‐saving window that selectively blocks near‐infrared (NIR) is a promising technology to save energy consumption. However, it is hard to achieve both high transmittance in visible light and high reflectance in NIR for the energy‐saving windows. Here, a TiO2/Ag/TiO2/SiO2/TiO2 multilayer is demonstrated on a glass substrate to selectively block NIR while maintaining high transmittance to visible light. The thickness of a TiO2/Ag/TiO2 structure is first design and optimized; the metal layer reflects NIR and the dielectric layers increase transmittance of visible light with zero reflection condition. To further enhance NIR‐blocking capability, a TiO2 back reflector is implemented with a SiO2 spacer to TiO2/Ag/TiO2 structure. The back reflector can induce additional Fresnel reflection without sacrificing transmittance to visible light. The optimal TiO2 (32 nm)/Ag (22 nm)/TiO2 (30 nm)/SiO2 (100 nm)/TiO2 (110 nm)/glass shows solar energy rejection 89.2% (reflection 86.5%, absorption 2.7%) in NIR, visible transmittance 69.9% and high long‐wave (3 ≤ λ ≤ 20 µm) reflectance > 95%. This proposed visible‐transparent, near‐infrared‐reflecting multilayer film can be applied to the windows of buildings and automobiles to reduce the energy consumption.

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Section: Introductionsupporting

confidence: 58%

Section: R B B B B Ndmentioning

confidence: 99%

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Photonic Multilayer Structure Induced High Near‐Infrared (NIR) Blockage as Energy‐Saving Window

Kim

Baek

Park

et al. 2021

Small

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“…Though this area of graphene prospect is still not widely explored at the moment, great opportunity exists by integrating graphene into WBE for production of high-performing polymer solar cells [289]. Thus, recent reports indicates that as a highly transparent and conductive material, graphene is capable of serving as hole transport layer [290] and a solar absorber [291] in photovoltaics and solar energy harvesting systems, as well as highperforming and flexible micro-supercapacitors with up to 200 Wcm -3 power density [292]. Hence, indicates that G-WBEC coatings offers great prospect for the future of energy harvesting, solar thermal and photovoltaics industry.…”

Section: Solar Energy Harvesting and Supercapacitorsmentioning

confidence: 99%

Graphene and water-based elastomer nanocomposites – a review

2021

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“…It has extraordinary electrical, optical and mechanical properties 9 . Since graphene supports the propagation of surface plasmon polaritons at terahertz and infrared frequencies, graphene is applied in tunable and reconfigurable devices such as absorbers 10 , 11 , modulators 12 , detectors 13 , switches 14 and lenses 15 .…”

Section: Introductionmentioning

confidence: 99%

Tunable broadband polarization converters based on coded graphene metasurfaces

Khajeh

Hamzavi-Zarghani

Yahaghi

et al. 2021

Sci Rep

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In this paper, two optimization algorithms (randomly initialized hill climbing and genetic algorithms) are considered to design broadband polarization converters based on coded metasurfaces. A pixeled graphene patch with an elliptic structure is proposed for the initial solution. Each pixel can be 1 and 0 which represents the presence and absence of the graphene. The initial guess tends to the optimum configuration after several optimization processes. Four broadband polarization converters are designed utilizing the optimization algorithms. By changing the chemical potential of graphene, the operation frequency of the polarization converters can be adjusted. Furthermore, the effects of relaxation time of graphene and incident angle on the polarization conversion bandwidth of the four designed structures are investigated.

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Graphene-based highly efficient and broadband solar absorber

Cited by 87 publications

References 44 publications

Photonic Multilayer Structure Induced High Near‐Infrared (NIR) Blockage as Energy‐Saving Window

Photonic Multilayer Structure Induced High Near‐Infrared (NIR) Blockage as Energy‐Saving Window

Graphene and water-based elastomer nanocomposites – a review

Tunable broadband polarization converters based on coded graphene metasurfaces

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