2D Materials and Devices
DEPARTMENTS
RESEARCH GROUPS
DESCRIPTION
The 2D Materials and Devices group (2DMD) research focus on CVD growth, transfer and device fabrication, using 2D materials, clean-room technology, and Raman imaging for structural characterization. Particular attention is given to biosensing devices, where immuno-assays and DNA sensors based on graphene liquid-gate FETs were developed. The devices specificity for particular biomarkers is achieved by functionalization of the graphene channel. DNA detection based on electrochemical arrays of graphene microsensors is achieved. The group is running collaborative projects on the fabrication of optoelectronic devices: a photodetector based on Van der Waals stacking of 2D materials (with LANASC and UMinho), and photocathodes that can potentially realize un-assisted solar water splitting by coupling tandem amorphous silicon solar cells with high efficiency hydrogen evolution electrodes (with NESC and IPV-5 Jülich). The 2DMD group research interests include the study of single photon emitters from controlled defects in h-BN (with Nanophotonics dept.) and the fabrication of graphene plasmonic devices that operate in the sub-mm wavelength range.
RESEARCH PROJECTS
PTDC/FIS-NAN/3668/2014: “LA2D – Large area two dimensional heterostructures for photodetectors”. Total Budget: 146.508,00 €. Duration: 36 months.
This project aims at building a large area photodetector with 2D materials in a Van der Waals vertically stacked heterostructure. These devices are interesting because they are extremely thin (only a few atoms thick), flexible and with much better electronic properties than more conventional materials used, for example, in wearable devices. A photodetector of this type is composed by stacking a boron nitride buffer-layer, a graphene sheet, a multilayer transition metal dichalcogenide, a second graphene sheet, and a boron nitride encapsulating layer. Partners: LANASC group, UMinho
PTDC/CTM-ENE/2349/2014: “SiTMP4SolarH2 – Solar-Driven Hydrogen Production Based on Silicon Photocathodes Coated with Novel Earth-Abundant Transition Metal Phosphide Nano-Catalysts”. Total Budget: 168.836,00 €. Duration: 24 months
This proposal aims to develop silicon based photocathodes coated with a chemically-inert thin protection layer and coupled with inexpensive, earth-abundant transition metal phosphide (TMP) nano-catalysts. The project focuses in developing photocathodes with a high open circuit potential that can potentially realize un-assisted solar water splitting, using tandem hydrogenated amorphous Si thin film solar cells coupled with TMP nano-catalysts as photocathodes.
GROUP LEADER
THE TEAM
DESCRIPTION
The 2D Materials and Devices group (2DMD) research focus on CVD growth, transfer and device fabrication, using 2D materials, clean-room technology, and Raman imaging for structural characterization. Particular attention is given to biosensing devices, where immuno-assays and DNA sensors based on graphene liquid-gate FETs were developed. The devices specificity for particular biomarkers is achieved by functionalization of the graphene channel. DNA detection based on electrochemical arrays of graphene microsensors is achieved. The group is running collaborative projects on the fabrication of optoelectronic devices: a photodetector based on Van der Waals stacking of 2D materials (with LANASC and UMinho), and photocathodes that can potentially realize un-assisted solar water splitting by coupling tandem amorphous silicon solar cells with high efficiency hydrogen evolution electrodes (with NESC and IPV-5 Jülich). The 2DMD group research interests include the study of single photon emitters from controlled defects in h-BN (with Nanophotonics dept.) and the fabrication of graphene plasmonic devices that operate in the sub-mm wavelength range.
RESEARCH PROJECTS
PTDC/FIS-NAN/3668/2014: “LA2D – Large area two dimensional heterostructures for photodetectors”. Total Budget: 146.508,00 €. Duration: 36 months.
This project aims at building a large area photodetector with 2D materials in a Van der Waals vertically stacked heterostructure. These devices are interesting because they are extremely thin (only a few atoms thick), flexible and with much better electronic properties than more conventional materials used, for example, in wearable devices. A photodetector of this type is composed by stacking a boron nitride buffer-layer, a graphene sheet, a multilayer transition metal dichalcogenide, a second graphene sheet, and a boron nitride encapsulating layer. Partners: LANASC group, UMinho
PTDC/CTM-ENE/2349/2014: “SiTMP4SolarH2 – Solar-Driven Hydrogen Production Based on Silicon Photocathodes Coated with Novel Earth-Abundant Transition Metal Phosphide Nano-Catalysts”. Total Budget: 168.836,00 €. Duration: 24 months
This proposal aims to develop silicon based photocathodes coated with a chemically-inert thin protection layer and coupled with inexpensive, earth-abundant transition metal phosphide (TMP) nano-catalysts. The project focuses in developing photocathodes with a high open circuit potential that can potentially realize un-assisted solar water splitting, using tandem hydrogenated amorphous Si thin film solar cells coupled with TMP nano-catalysts as photocathodes.
GROUP LEADER
THE TEAM
RESEARCH
DEPARTMENTS
RESEARCH GROUPS