Air Gap-Based Cavities Dramatically Enhance the True Intrinsic Spectral Signals of Suspended and Pristine Two-Dimensional Materials

2019 ◽  
Vol 123 (9) ◽  
pp. 5667-5679 ◽  
Author(s):  
Tzu-Yao Lin ◽  
Yang-Chun Lee ◽  
Yu-Wei Lee ◽  
Sih-Wei Chang ◽  
Dai-Liang Ma ◽  
...  
Keyword(s):  
Air Gap ◽  
Two Dimensional ◽  
Two Dimensional Materials

scholarly journals Electrochemical Bubbling Transfer of Graphene Using a Polymer Support with Encapsulated Air Gap as Permeation Stopping Layer

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Jie Sun ◽  
Shigui Deng ◽  
Weiling Guo ◽  
Zhaoyao Zhan ◽  
Jun Deng ◽  
...  
Keyword(s):  
Cost Effectiveness ◽  
Methyl Methacrylate ◽  
Polyethylene Terephthalate ◽  
Electrical Characterization ◽  
Air Gap ◽  
Polymer Support ◽  
Mechanical Support ◽  
Two Dimensional ◽  
Two Dimensional Materials ◽  
Plastic Frame

Electrochemical bubbling transfer of graphene is a technique with high industrial potential due to its scalability, time- and cost-effectiveness, and ecofriendliness. However, the graphene is often damaged due to the turbulence and the trapped bubbles formed by the direct H2O and H+permeation through the supporting polymer. We invent a graphene mechanical support of polyethylene terephthalate foil/plastic frame/poly(methyl methacrylate) sandwich, with an encapsulated air gap as the permeation stopping layer. The graphene damage is drastically reduced, as confirmed by the morphology and structural and electrical characterization, ultimately improving the controllability/reproducibility of the bubbling transfer of graphene and other two-dimensional materials.

Redox-Active Approach Towards New Magnetic And Conductive Two-Dimensional Materials

2018 ◽  
Author(s):  
Penny Perlepe ◽  
Rodolphe Clérac ◽  
Itziar Oyarzabal ◽  
Corine Mathonière
Keyword(s):  
Two Dimensional ◽  
Active Approach ◽  
Redox Active ◽  
Two Dimensional Materials

scholarly journals Polarization-sensitive photodetectors based on three-dimensional molybdenum disulfide (MoS2) field-effect transistors

Nanophotonics ◽  
2020 ◽  
Vol 9 (16) ◽  
pp. 4719-4728
Author(s):  
Tao Deng ◽  
Shasha Li ◽  
Yuning Li ◽  
Yang Zhang ◽  
Jingye Sun ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Field Effect ◽  
High Performance ◽  
Field Effect Transistors ◽  
Three Dimensional ◽  
Polarized Light ◽  
Optical Field ◽  
Two Dimensional ◽  
Polarization Ratio ◽  
Two Dimensional Materials

AbstractThe molybdenum disulfide (MoS2)-based photodetectors are facing two challenges: the insensitivity to polarized light and the low photoresponsivity. Herein, three-dimensional (3D) field-effect transistors (FETs) based on monolayer MoS2 were fabricated by applying a self–rolled-up technique. The unique microtubular structure makes 3D MoS2 FETs become polarization sensitive. Moreover, the microtubular structure not only offers a natural resonant microcavity to enhance the optical field inside but also increases the light-MoS2 interaction area, resulting in a higher photoresponsivity. Photoresponsivities as high as 23.8 and 2.9 A/W at 395 and 660 nm, respectively, and a comparable polarization ratio of 1.64 were obtained. The fabrication technique of the 3D MoS2 FET could be transferred to other two-dimensional materials, which is very promising for high-performance polarization-sensitive optical and optoelectronic applications.

scholarly journals Two-Dimensional Materials with Giant Optical Nonlinearities near the Theoretical Upper Limit

ACS Nano ◽  
2021 ◽  
Vol 15 (4) ◽  
pp. 7155-7167
Author(s):  
Alireza Taghizadeh ◽  
Kristian S. Thygesen ◽  
Thomas G. Pedersen
Keyword(s):  
Optical Nonlinearities ◽  
Two Dimensional ◽  
Upper Limit ◽  
Two Dimensional Materials

scholarly journals Spontaneous Emission Spectrum of a WS2 Monolayer under Strong Coupling Conditions

2020 ◽  
Vol 4 (1) ◽  
pp. 9
Author(s):  
Vasilios Karanikolas ◽  
Ioannis Thanopulos ◽  
Emmanuel Paspalakis
Keyword(s):  
Emission Spectrum ◽  
Strong Coupling ◽  
Spontaneous Emission ◽  
Two Dimensional ◽  
Spontaneous Emission Spectrum ◽  
Light Confinement ◽  
Coupling Conditions ◽  
Two Dimensional Materials ◽  
All Optical ◽  
Ws2 Monolayer

Two-dimensional materials allow for extreme light confinement, thus becoming important candidates for all optical application platforms.  [...]

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