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TransFlexTeg

Title
Large area transparent thin film thermoelectric devices for smart window and flexible applications
Funding
EC | H2020 | RIA
Call
H2020-ICT-2014-1
Contract (GA) number
645241
Start Date
2015/01/01
End Date
2018/12/31
Open Access mandate
yes
Data Pilot
yes
Organizations
AGFA, GRINP, AALTO, VTT, PICOSUN OY, UNINOVA, STREP Ltd, Solearth Ltd, VTT, CNRS
More information
Detailed project information (CORDIS)

 

  • Third nearest neighbor parameterized tight binding model for graphene nano-ribbons

    Van-Truong Tran; Jérôme Saint-Martin; Philippe Dollfus; Sebastian Volz (2017)
    Projects: EC | TransFlexTeg (645241)
    The existing tight binding models can very well reproduce the ab initio band structure of a 2D graphene sheet. For graphene nano-ribbons (GNRs), the current sets of tight binding parameters can successfully describe the semi-conducting behavior of all armchair GNRs. However, they are still failing in reproducing accurately the slope of the bands that is directly associated with the group velocity and the effective mass of electrons. In this work, both density functional theory and tight bindi...

    High thermoelectric performance of graphite nanofibers

    Tran, Van-Truong; Saint-Martin, Jérôme; Dollfus, Philippe; Volz, Sebastian (2017)
    Projects: EC | TransFlexTeg (645241)
    Graphite nanofibers (GNFs) have been demonstrated to be a promising material for hydrogen storage and heat management in electronic devices. Here, by means of first-principles and transport simulations, we show that GNFs can also be an excellent material for thermoelectric applications thanks to the interlayer weak van der Waals interaction that induces low thermal conductance and a step-like shape in the electronic transmission with mini-gaps, which are necessary ingredients to achieve high ...

    Transparent, Flexible, and Passive Thermal Touch Panel

    Ruoho, Mikko; Juntunen, Taneli; Alasaarela, Tapani; Pudas, Marko; Tittonen, Ilkka (2016)
    Projects: EC | TransFlexTeg (645241)
    This work presents a touch panel concept, which is enabled by a novel designof thin film thermocouples. The design offers a simple implementation byutilizing a single thin film to function as an array of thermocouples. Theconcept is demonstrated as a flexible, passive, and highly transparent touchpanel. The passive nature of the thermoelectric touch recognition allows theperformance of the presented sensor to be optimal at moderate sheet resistancevalues of the transparent conductive layers. ...

    Optimizing isotope and vacancy engineering in graphene ribbons to enhance the thermoelectric performance without degrading the electronic properties

    Tran, Van-Truong; Saint-Martin, Jérôme; Dollfus, Philippe; Volz, Sebastian (2016)
    Projects: EC | TransFlexTeg (645241)
    The enhancement of thermoelectric figure of merit ZT requires to either increase the power factor or reduce the phonon conductance, or even both. In graphene, the high phonon thermal conductivity is the main factor limiting the thermoelectric conversion. The common strategy to enhance ZT is therefore to introduce phonon scatterers to suppress the phonon conductance while retaining high electrical conductance and Seebeck coefficient. Although thermoelectric performance is eventually enhanced, ...

    Development of Graphene Based Supercapacitors

    Almeida, António Carranca de (2016)
    Projects: EC | TransFlexTeg (645241)
    The modern world is gasping for electrical energy, from our homes to our daily used devices such as phones, computers and even to our cars. Everything needs to be connected to a battery and the solution existent is becoming obsolete. The market is with a huge gap and supercapacitors are the answer for that space. Graphene assumes a role play in this field for its amazing surface area and its conductivity, making it a perfect candidate for the electrodes of this devices. In this work, two synt...

    Optimizing the thermoelectric performance of graphene nano-ribbons without degrading the electronic properties

    Tran, Van-Truong; Saint-Martin, J?r?me; Dollfus, Philippe; Volz, Sebastian (2017)
    Projects: EC | TransFlexTeg (645241)
    The enhancement of thermoelectric figure of merit ZT requires to either increase the power factor or reduce the phonon conductance, or even both. In graphene, the high phonon thermal conductivity is the main factor limiting the thermoelectric conversion. The common strategy to enhance ZT is therefore to introduce phonon scatterers to suppress the phonon conductance while retaining high electrical conductance and Seebeck coefficient. Although thermoelectric performance is eventually enhanced, ...

    Thermal conductivity of amorphous Al 2 O 3 /TiO 2 nanolaminates deposited by atomic layer deposition

    Ali, Saima; Juntunen, Taneli; Sintonen, Sakari; Ylivaara, Oili M E; Puurunen, Riikka L; Lipsanen, Harri; Tittonen, Ilkka; Hannula, Simo-Pekka (2016)
    Projects: EC | TransFlexTeg (645241)

    V 2 O 5 Thin Films for Flexible and High Sensitivity Transparent Temperature Sensor

    Bianchi, Catarina; Loureiro, Joana; Duarte, Paulo; Marques, Jose; Figueira, Joana; Ropio, Ines; Ferreira, Isabel (2016)
    Projects: EC | CapTherPV (647596), EC | TransFlexTeg (645241)

    Growing of biomorphic nanomaterials based on calcium carbonate

    Ritto, Gonçalo Nuno Fernandes (2016)
    Projects: FCT | UID/CTM/50025/2013 (147333), EC | TransFlexTeg (645241)
    Calcium carbonate was produced by precipitation: oil bath and ultra-sounds, being studied several parameters such as: temperature, magnetic stir speed, concentration of the reagents, duration of the reaction and the medium of the reaction. Samples rested for a month before some of the precipitated was removed, washed and dried to get the powder characterized without any secondary product or the solvent of the reaction. Dip-coating technique was also used to produce calcium carbonate with a...
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