Nucleation, Growth and Hydrogen Resistance of Multi-Layer Graphene

We have investigated Raman spectra of the G and 2D lines of a single-layer graphene (SLG) with metallic contacts. The shift of the G and 2D lines is correlated to two different factors. Before performing annealing treatment or annealing under low temperature, the electron transfer on graphene surface is dominated by nonuniform strain effect. As the annealing treatment is enhanced, however, a suitable annealing treatment can eliminate the nonuniform strain effect where the relative work function (WF) between graphene and metal becomes a main factor to determine electronic transfer. Moreover, it is confirmed that the optimized annealing treatment can also decrease effectively the structural defect and induced disorder in graphene due to metallic contacts.

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Hybrid dye sensitized solar cell based on single layer graphene quantum dots

Dyes and Pigments ◽

10.1016/j.dyepig.2019.108118 ◽

2020 ◽

Vol 175 ◽

pp. 108118 ◽

Cited By ~ 3

Author(s):

Farhad Jahantigh ◽

S.M. Bagher Ghorashi ◽

Amir Bayat

Keyword(s):

Quantum Dots ◽

Solar Cell ◽

Graphene Quantum Dots ◽

Single Layer ◽

Single Layer Graphene ◽

Dye Sensitized Solar Cell ◽

Dye Sensitized ◽

Layer Graphene

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Solvent effect on nucleation-growth of titanium-oxo-alkoxy nanoparticles

Chemical Physics Letters ◽

10.1016/j.cplett.2017.01.059 ◽

2017 ◽

Vol 672 ◽

pp. 119-123 ◽

Cited By ~ 8

Author(s):

Khley Cheng ◽

Khay Chhor ◽

Andrei Kanaev

Keyword(s):

Solvent Effect ◽

Nucleation Growth

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Double-layer graphene on photonic crystal waveguide electro-absorption modulator with 12 GHz bandwidth

Nanophotonics ◽

10.1515/nanoph-2019-0381 ◽

2019 ◽

Vol 9 (8) ◽

pp. 2377-2385 ◽

Cited By ~ 4

Author(s):

Zhao Cheng ◽

Xiaolong Zhu ◽

Michael Galili ◽

Lars Hagedorn Frandsen ◽

Hao Hu ◽

...

Keyword(s):

Photonic Crystal ◽

Double Layer ◽

Slow Light ◽

Modulation Depth ◽

Photonic Crystal Waveguide ◽

Optical Modulators ◽

Layer Graphene ◽

Silicon Photonic ◽

On Chip ◽

Silicon Based

AbstractGraphene has been widely used in silicon-based optical modulators for its ultra-broadband light absorption and ultrafast optoelectronic response. By incorporating graphene and slow-light silicon photonic crystal waveguide (PhCW), here we propose and experimentally demonstrate a unique double-layer graphene electro-absorption modulator in telecommunication applications. The modulator exhibits a modulation depth of 0.5 dB/μm with a bandwidth of 13.6 GHz, while graphene coverage length is only 1.2 μm in simulations. We also fabricated the graphene modulator on silicon platform, and the device achieved a modulation bandwidth at 12 GHz. The proposed graphene-PhCW modulator may have potentials in the applications of on-chip interconnections.

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