Thickness and Layer Stacking Order Effects on Complex Optical Conductivity and Exciton Strength of Few-Layer Graphene: Implications for Optical Modulators and Photodetectors

2022 ◽  
Author(s):  
Mingsheng Fang ◽  
Honggang Gu ◽  
Baokun Song ◽  
Zhengfeng Guo ◽  
Shiyuan Liu
Keyword(s):  
Optical Conductivity ◽  
Order Effects ◽  
Optical Modulators ◽  
Layer Graphene ◽  
Stacking Order ◽  
Layer Stacking ◽  
Few Layer Graphene

scholarly journals Enhanced optical conductivity induced by surface states in ABC-stacked few-layer graphene

2011 ◽  
Vol 83 (24) ◽  
Author(s):  
Jia-An Yan ◽  
W. Y. Ruan ◽  
M. Y. Chou
Keyword(s):  
Optical Conductivity ◽  
Surface States ◽  
Layer Graphene ◽  
Few Layer Graphene

scholarly journals Measuring the Complex Optical Conductivity of Graphene by Fabry-Pérot Reflectance Spectroscopy

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Behnood G. Ghamsari ◽  
Jacob Tosado ◽  
Mahito Yamamoto ◽  
Michael S. Fuhrer ◽  
Steven M. Anlage
Keyword(s):  
Optical Conductivity ◽  
Laser Scanning ◽  
Complex Refractive Index ◽  
Laser Source ◽  
Optical Index ◽  
Layer Graphene ◽  
Fabry Perot ◽  
Visible Wavelengths ◽  
Trilayer Graphene ◽  
Few Layer Graphene

Abstract We have experimentally studied the dispersion of optical conductivity in few-layer graphene through reflection spectroscopy at visible wavelengths. A laser scanning microscope (LSM) with a supercontinuum laser source measured the frequency dependence of the reflectance of exfoliated graphene flakes, including monolayer, bilayer and trilayer graphene, loaded on a Si/SiO2 Fabry-Pérot resonator in the 545–700 nm range. The complex refractive index of few-layer graphene, n − ik, was extracted from the reflectance contrast to the bare substrate. It was found that each few-layer graphene possesses a unique dispersionless optical index. This feature indicates that the optical conductivity does not simply scale with the number of layers, and that inter-layer electrodynamics are significant at visible energies.

scholarly journals Multi-scale investigation of interface properties, stacking order and decoupling of few layer graphene on C-face 4H-SiC

Carbon ◽  
2017 ◽  
Vol 116 ◽  
pp. 722-732 ◽  
Author(s):  
C. Bouhafs ◽  
A.A. Zakharov ◽  
I.G. Ivanov ◽  
F. Giannazzo ◽  
J. Eriksson ◽  
...  
Keyword(s):  
Interface Properties ◽  
Multi Scale ◽  
Layer Graphene ◽  
Stacking Order ◽  
Few Layer Graphene

Imaging layer number and stacking order through formulating Raman fingerprints obtained from hexagonal single crystals of few layer graphene

2012 ◽  
Vol 24 (1) ◽  
pp. 015702 ◽  
Author(s):  
Jih-Shang Hwang ◽  
Yu-Hsiang Lin ◽  
Jeong-Yuan Hwang ◽  
Railing Chang ◽  
Surojit Chattopadhyay ◽  
...  
Keyword(s):  
Single Crystals ◽  
Layer Number ◽  
Layer Graphene ◽  
Stacking Order ◽  
Few Layer Graphene

Probing Layer Number and Stacking Order of Few-Layer Graphene by Raman Spectroscopy

Small ◽  
2010 ◽  
Vol 6 (2) ◽  
pp. 195-200 ◽  
Author(s):  
Yufeng Hao ◽  
Yingying Wang ◽  
Lei Wang ◽  
Zhenhua Ni ◽  
Ziqian Wang ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Layer Number ◽  
Layer Graphene ◽  
Stacking Order ◽  
Few Layer Graphene

scholarly journals Imaging Stacking Order in Few-Layer Graphene

Nano Letters ◽  
2011 ◽  
Vol 11 (1) ◽  
pp. 164-169 ◽  
Author(s):  
Chun Hung Lui ◽  
Zhiqiang Li ◽  
Zheyuan Chen ◽  
Paul V. Klimov ◽  
Louis E. Brus ◽  
...  
Keyword(s):  
Layer Graphene ◽  
Stacking Order ◽  
Few Layer Graphene

Global Control of Stacking-Order Phase Transition by Doping and Electric Field in Few-Layer Graphene

Nano Letters ◽  
2020 ◽  
Vol 20 (5) ◽  
pp. 3106-3112
Author(s):  
Hongyuan Li ◽  
M. Iqbal Bakti Utama ◽  
Sheng Wang ◽  
Wenyu Zhao ◽  
Sihan Zhao ◽  
...  
Keyword(s):  
Phase Transition ◽  
Electric Field ◽  
Order Phase Transition ◽  
Global Control ◽  
Layer Graphene ◽  
Stacking Order ◽  
Few Layer Graphene

Influence of the layer number and stacking order on out-of-plane phonons in few-layer graphene

2013 ◽  
Vol 250 (12) ◽  
pp. 2697-2701 ◽  
Author(s):  
Felix Herziger ◽  
Janina Maultzsch
Keyword(s):  
Layer Number ◽  
Layer Graphene ◽  
Stacking Order ◽  
Out Of Plane ◽  
Few Layer Graphene

scholarly journals Possible pair-graphene structures govern the thermodynamic properties of arbitrarily stacked few-layer graphene

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yong Sun ◽  
Kenta Kirimoto ◽  
Tsuyoshi Takase ◽  
Daichi Eto ◽  
Shohei Yoshimura ◽  
...  
Keyword(s):  
Thermodynamic Properties ◽  
Single Layer ◽  
Single Layer Graphene ◽  
Lattice Deformation ◽  
Stable Pair ◽  
Stick Slip ◽  
Graphene Layers ◽  
Layer Graphene ◽  
Stacking Order ◽  
Few Layer Graphene

AbstractThe thermodynamic properties of few-layer graphene arbitrarily stacked on LiNbO3 crystal were characterized by measuring the parameters of a surface acoustic wave as it passed through the graphene/LiNbO3 interface. The parameters considered included the propagation velocity, frequency, and attenuation. Mono-, bi-, tri-, tetra-, and penta-layer graphene samples were prepared by transferring individual graphene layers onto LiNbO3 crystal surfaces at room temperature. Intra-layer lattice deformation was observed in all five samples. Further inter-layer lattice deformation was confirmed in samples with odd numbers of layers. The inter-layer lattice deformation caused stick–slip friction at the graphene/LiNbO3 interface near the temperature at which the layers were stacked. The thermal expansion coefficient of the deformed few-layer graphene transitioned from positive to negative as the number of layers increased. To explain the experimental results, we proposed a few-layer graphene even–odd layer number stacking order effect. A stable pair-graphene structure formed preferentially in the few-layer graphene. In even-layer graphene, the pair-graphene structure formed directly on the LiNbO3 substrate. Contrasting phenomena were noted with odd-layer graphene. Single-layer graphene was bound to the substrate after the stable pair-graphene structure was formed. The pair-graphene structure affected the stacking order and inter-layer lattice deformation of few-layer graphene substantially.

scholarly journals Electric-field-induced rich magneto-absorption spectra of ABC-stacked trilayer graphene

RSC Advances ◽  
2015 ◽  
Vol 5 (98) ◽  
pp. 80410-80414 ◽  
Author(s):  
Yi-Ping Lin ◽  
Chiun-Yan Lin ◽  
Cheng-Pong Chang ◽  
Min-Fa Lin
Keyword(s):  
Electric Field ◽  
Absorption Spectra ◽  
Optical Spectra ◽  
Layer Graphene ◽  
Stacking Order ◽  
Trilayer Graphene ◽  
Few Layer Graphene

The magneto-optical spectra of ABC-stacked trilayer graphene are enriched by an electric field, providing a way to experimentally identify the stacking order of few layer graphene systems.

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