scholarly journals Monolayer-graphene-based perfect absorption structures in the near infrared

2017 ◽  
Vol 25 (12) ◽  
pp. 13079 ◽  
Author(s):  
Y. S. Fan ◽  
C. C. Guo ◽  
Z. H. Zhu ◽  
W. Xu ◽  
F. Wu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Monolayer Graphene ◽  
Perfect Absorption

scholarly journals Monolayer-graphene-based broadband and wide-angle perfect absorption structures in the near infrared

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Yansong Fan ◽  
Chucai Guo ◽  
Zhihong Zhu ◽  
Wei Xu ◽  
Fan Wu ◽  
...  
Keyword(s):  
Near Infrared ◽  
Monolayer Graphene ◽  
Wide Angle ◽  
Perfect Absorption

Visible to near-infrared coherent perfect absorption in monolayer graphene

2018 ◽  
Vol 20 (9) ◽  
pp. 095401 ◽  
Author(s):  
Feng Xiong ◽  
Jinglan Zhou ◽  
Wei Xu ◽  
Zhihong Zhu ◽  
Xiaodong Yuan ◽  
...  
Keyword(s):  
Near Infrared ◽  
Monolayer Graphene ◽  
Perfect Absorption ◽  
Coherent Perfect Absorption

Perfect absorption in a monolayer graphene at the near-infrared using a compound waveguide grating by robust critical coupling

2019 ◽  
Vol 17 (1) ◽  
pp. 010501
Author(s):  
Jinhua Hu Jinhua Hu ◽  
Jia Fu Jia Fu ◽  
Xiuhong Liu Xiuhong Liu ◽  
Danping Ren Danping Ren ◽  
Jijun Zhao Jijun Zhao ◽  
...  
Keyword(s):  
Near Infrared ◽  
Monolayer Graphene ◽  
Critical Coupling ◽  
Perfect Absorption ◽  
Waveguide Grating

scholarly journals Highly Efficient Light Absorption of Monolayer Graphene by Quasi-Bound State in the Continuum

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 484
Author(s):  
Tian Sang ◽  
Sina Abedini Dereshgi ◽  
Wisnu Hadibrata ◽  
Ibrahim Tanriover ◽  
Koray Aydin
Keyword(s):  
Light Absorption ◽  
Near Infrared ◽  
Structural Parameters ◽  
Bound State ◽  
Monolayer Graphene ◽  
Destructive Interference ◽  
Perfect Absorption ◽  
Central Wavelength ◽  
Highly Efficient ◽  
The Continuum

Graphene is an ideal ultrathin material for various optoelectronic devices, but poor light–graphene interaction limits its further applications particularly in the visible (Vis) to near-infrared (NIR) region. Despite tremendous efforts to improve light absorption in graphene, achieving highly efficient light absorption of monolayer graphene within a comparatively simple architecture is still urgently needed. Here, we demonstrate the interesting attribute of bound state in the continuum (BIC) for highly efficient light absorption of graphene by using a simple Si-based photonic crystal slab (PCS) with a slit. Near-perfect absorption of monolayer graphene can be realized due to high confinement of light and near-field enhancement in the Si-based PCS, where BIC turns into quasi-BIC due to the symmetry-breaking of the structure. Theoretical analysis based on the coupled mode theory (CMT) is proposed to evaluate the absorption performances of monolayer graphene integrated with the symmetry-broken PCS, which indicates that high absorption of graphene is feasible at critical coupling based on the destructive interference of transmission light. Moreover, the absorption spectra of the monolayer graphene are stable to the variations of the structural parameters, and the angular tolerances of classical incidence can be effectively improved via full conical incidence. By using the full conical incidence, the angular bandwidths for the peak absorptivity and for the central wavelength of graphene absorption can be enhanced more than five times and 2.92 times, respectively. When the Si-based PCS with graphene is used in refractive index sensors, excellent sensing performances with sensitivity of 604 nm/RIU and figure of merit (FoM) of 151 can be achieved.

Organic Sub-Bandgap Schottky Barrier Photodetectors with Near-Infrared Coherent Perfect Absorption

ACS Photonics ◽  
2021 ◽  
Author(s):  
Yeonghoon Jin ◽  
Hyung Suk Kim ◽  
Junghoon Park ◽  
Seunghyup Yoo ◽  
Kyoungsik Yu
Keyword(s):  
Schottky Barrier ◽  
Near Infrared ◽  
Perfect Absorption ◽  
Coherent Perfect Absorption

scholarly journals Tunable terahertz coherent perfect absorption in a monolayer graphene

2014 ◽  
Vol 39 (21) ◽  
pp. 6269 ◽  
Author(s):  
Yuancheng Fan ◽  
Fuli Zhang ◽  
Qian Zhao ◽  
Zeyong Wei ◽  
Hongqiang Li
Keyword(s):  
Monolayer Graphene ◽  
Perfect Absorption ◽  
Coherent Perfect Absorption

A Study of GaAs1–xSbx Axial Nanowires Grown on Monolayer Graphene by Ga-Assisted Molecular Beam Epitaxy for Flexible Near-Infrared Photodetectors

2019 ◽  
Vol 2 (7) ◽  
pp. 4528-4537 ◽  
Author(s):  
Surya Nalamati ◽  
Manish Sharma ◽  
Prithviraj Deshmukh ◽  
Jeffrey Kronz ◽  
Robert Lavelle ◽  
...  
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Near Infrared ◽  
Monolayer Graphene ◽  
Infrared Photodetectors

Approaching total absorption at near infrared in a large area monolayer graphene by critical coupling

2014 ◽  
Vol 105 (18) ◽  
pp. 181105 ◽  
Author(s):  
Yonghao Liu ◽  
Arvinder Chadha ◽  
Deyin Zhao ◽  
Jessica R. Piper ◽  
Yichen Jia ◽  
...  
Keyword(s):  
Near Infrared ◽  
Monolayer Graphene ◽  
Total Absorption ◽  
Critical Coupling ◽  
Large Area

scholarly journals Near-infrared coherent perfect absorption in plasmonic metal-insulator-metal waveguide

2015 ◽  
Vol 23 (19) ◽  
pp. 24464 ◽  
Author(s):  
Hyeonsoo Park ◽  
Seong-Yeol Lee ◽  
Joonsoo Kim ◽  
Byoungho Lee ◽  
Hwi Kim
Keyword(s):  
Near Infrared ◽  
Perfect Absorption ◽  
Metal Insulator ◽  
Coherent Perfect Absorption ◽  
Metal Waveguide ◽  
Metal Insulator Metal
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