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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Van Erps, Jurgen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2023VCSEL wavelength tunability using controlled mechanical strain
- 2021Increasing the Microfabrication Performance of Synthetic Hydrogel Precursors through Molecular Designcitations
- 20203D direct laser writing of microstructured optical fiber tapers on single-mode fibers for mode-field conversioncitations
- 2018Ultrathin Poly-DL-Lactic Membranes for Corneal Endothelial Transplantation
- 2018Localized optical- quality doping of graphene on silicon waveguides through a TFSA- containing polymer matrixcitations
- 2016Replication of self-centering optical fiber alignment structures using hot embossingcitations
- 2016Hot-embossing replication of self-centering optical fiber alignment structures prototyped by deep proton writingcitations
- 2016Deep proton writing with 12 MeV protons for rapid prototyping of microstructures in polymethylmethacrylatecitations
- 2016Optofluidic multi-measurement system for the online monitoring of lubricant oilcitations
- 2016Design and prototyping of self-centering optical single-mode fiber alignment structurescitations
- 2015Mould insert fabrication of a single-mode fibre connector alignment structure optimized by justified partial metallizationcitations
- 2013Low-coherence interferometry with polynomial interpolation on Compute Unified Device Architectur-enabled graphics processing units
- 2013Gloss, hydrophobicity and surface texture of papers with organic nanoparticle coatings
- 2013B-Calm: An open-source multi-GPU-based 3D-FDTD with multi-pole dispersion for plasmonics
- 2010Populating multi-fiber fiberoptic connectors using an interferometric measurement of fiber tip position and facet quality
- 2010Design and fabrication of embedded micro-mirror inserts for out-of-plane coupling in PCB-level optical interconnects
- 2008Hot embossing of microoptical components prototyped by deep proton writing
- 2008Embedded Micro-Mirror inserts for optical printed circuit boards
- 2008Deep Proton Writing: A tool for rapid prototyping of polymer micro-opto-mechanical modules
- 2007Deep Proton Writing: A tool for rapid prototyping polymer micro-opto-mechanical modules
- 2006Laser Ablation of Parallel Optical Interconnect Waveguides
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article
Localized optical- quality doping of graphene on silicon waveguides through a TFSA- containing polymer matrix
Abstract
<p>The use of graphene in optical and photonic applications has gained much attention in recent years. To maximize the exploitation of graphene's extraordinary optical properties, precise control over its Fermi level (e.g. by means of chemical doping) will be of vital importance. In this work, we show the usage of a versatile p-doping strategy based on the incorporation of bis(trifluoromethanesulfonyl)amide (TFSA), functioning as an active p-dopant molecule, into a poly(2,2,3,3,4,4,5,5-octafluoropentyl methacrylate) (POFPMA) polymer matrix. The TFSA/POFPMA dopant can be utilized both onto large size graphene regions via spin coating and on small predefined spatial zones of micrometer dimension by localized inkjet printing. Whereas pure TFSA suffers from a clustered layer deposition combined with environmental instability, the application of the POFPMA polymer matrix yields doping layers revealing superior properties counteracting the existing shortcomings of pure TFSA. A first key finding relates to the optical quality of the dopant layer. We obtain a layer with an extremely low surface roughness (0.4-0.8 nm/25 μm<sup>2</sup>) while exhibiting very high transparency (absorbance <0.05%) over the 500-1900 nm wavelength range, with strongly enhanced doping stability as a function of time up to several weeks (for inkjet-printed deposition) and months (for spin coated deposition). Finally, the doping efficiency is very high, reaching a carrier density around +4 × 10<sup>13</sup> cm<sup>−2</sup> whereas the optical transmission of a graphene-covered Si waveguide revealed a strong improvement (4.22 dB transmission increase per 100 μm graphene length at the wavelength of 1550 nm) after deposition of the dopant via inkjet printing.</p>