Voltage-controlled enhancement of optical absorption in a graphene monolayer with a one-dimensional photonic crystal

Rao, Wei-Feng; Zhang, Mao-Ting; Zheng, Gaige

doi:10.1007/s00340-017-6810-z

Cited by 10 publications

(5 citation statements)

References 27 publications

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“…Moreover, preparing hybrid structures with PCs can also lead to the enhancement of absorption because the optical properties of these hybrids can radically differ from those of the individual elements. For instance, hybrid structures based on graphene and PCs as well as photonic quasi crystals have been intensively studied in order to achieve effective optical absorption by the structures [13][14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

On the enhancement of light absorption in vanadium dioxide/1D photonic crystal composite nanostructures

Rashidi¹,

Hatef²,

Namdar³

2018

J. Phys. D: Appl. Phys.

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Section: Introductionmentioning

confidence: 99%

On the enhancement of light absorption in vanadium dioxide/1D photonic crystal composite nanostructures

Rashidi¹,

Hatef²,

Namdar³

2018

J. Phys. D: Appl. Phys.

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“…To determine the optical properties of graphene, we have used the surface conductivity of graphene which determined by Kubo-Formula [6,28,[33][34][35]. The surface conductivity of graphene could be represented as shown in the following equation,…”

Section: Graphenementioning

confidence: 99%

“…In our simulation procedure, the dimensional, thermal and optical parameter values of graphene are taken as d g =0.34 nm, T=300 K, m = 0.5 eV c and t = 0.065 eV [3,6,33,34].…”

Section: Graphenementioning

confidence: 99%

Graphene deposited liquid crystal and thermal sensitivity using photonic crystals

2021

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In this work, we present a simple design to act as a temperature sensor based on the well-known one dimensional photonic crystal. The main idea of the proposed sensor is essentially depending on the inclusion a defect layer of graphene monolayers deposited on nematic liquid crystal through the photonic crystal. The transfers matrix method, Kubo-Formula, and fitting experimental data represent the core axes of our theoretical treatment. Here, our design is prepared to sense temperature based on the shift of the resonant peak with the temperature variation. The performance of such sensor is demonstrated by calculating the sensitivity, figure of merit, detection limit, sensor resolution and the quality factor. The effect of the thickness of the defect layer and the mode of polarization as well on the performance of our sensor is investigated. The numerical results show that our sensor could be of interest in many fields of application due to the high values of its sensitivity and quality factor. The proposed sensor could provide a sensitivity of 4 nm °C−1 and quality factor up to 11000.

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“…In the Vis and NIR regions, on the contrary, absence of SSPs makes it necessary to couple graphene with resonant structures such as metamaterials, photonic crystals and plasmonic materials [ 33 , 34 , 35 , 36 , 37 , 38 , 39 ].…”

Section: Introductionmentioning

confidence: 99%

Towards Perfect Absorption of Single Layer CVD Graphene in an Optical Resonant Cavity: Challenges and Experimental Achievements

et al. 2022

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Graphene is emerging as a promising material for the integration in the most common Si platform, capable to convey some of its unique properties to fabricate novel photonic and optoelectronic devices. For many real functions and devices however, graphene absorption is too low and must be enhanced. Among strategies, the use of an optical resonant cavity was recently proposed, and graphene absorption enhancement was demonstrated, both, by theoretical and experimental studies. This paper summarizes our recent progress in graphene absorption enhancement by means of Si/SiO2-based Fabry–Perot filters fabricated by radiofrequency sputtering. Simulations and experimental achievements carried out during more than two years of investigations are reported here, detailing the technical expedients that were necessary to increase the single layer CVD graphene absorption first to 39% and then up to 84%. Graphene absorption increased when an asymmetric Fabry–Perot filter was applied rather than a symmetric one, and a further absorption increase was obtained when graphene was embedded in a reflective rather than a transmissive Fabry–Perot filter. Moreover, the effect of the incident angle of the electromagnetic radiation and of the polarization of the light was investigated in the case of the optimized reflective Fabry–Perot filter. Experimental challenges and precautions to avoid evaporation or sputtering induced damage on the graphene layers are described as well, disclosing some experimental procedures that may help other researchers to embed graphene inside PVD grown materials with minimal alterations.

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Voltage-controlled enhancement of optical absorption in a graphene monolayer with a one-dimensional photonic crystal

Cited by 10 publications

References 27 publications

On the enhancement of light absorption in vanadium dioxide/1D photonic crystal composite nanostructures

On the enhancement of light absorption in vanadium dioxide/1D photonic crystal composite nanostructures

Graphene deposited liquid crystal and thermal sensitivity using photonic crystals

Towards Perfect Absorption of Single Layer CVD Graphene in an Optical Resonant Cavity: Challenges and Experimental Achievements

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