Barbero, N.

Barolo, C.

Bonomo, M.

Fin, A.

Giordano, M.

Viscardi, G.

English

Institutional Research Information System University of Turin

Synthesis of Quaterrylene-based Dyes as possible NIR sensitizers in Dye-Sensitized Solar CellsMarco Giordano,a A. Fin,b M. Bonomo,a N. Barbero,a C. Barolo,a G. Viscardiaa Dipartimento di Chimica, NIS Interdepartmental and INSTM Reference Centre, Università di Torino, Torino, Italyb Dipartimento di Scienza e Tecnologia del Farmaco, Università di Torino, Torino, ItalyE-mail: marco.giordano@unito.itReferences[1] M. Freitag, J. Teuscher, Y. Saygili, X. Zhang, F. Giordano, P. Liska, J. Hua, S. M. Zakeeruddin, J.-E. Moser, M.Grätzel, M. et al., Nature Photonics, 2017, 11, 372 – 379. [2] N. Barbero, F. Sauvage, in Materials for SustainableEnergy Applications: Conversion, Storage, Transmission and Consumption, CRC Press, 2016, 87-147. [3] D.Saccone, S. Galliano, N. Barbero, P. Quagliotto, G. Viscardi, C. Barolo, Eur. J. Org. Chem., 2016, 2244 – 2259.AcknowledgementThis project has received funding from theEuropean Union’s Horizon 2020 research andinnovation program under grant agreementNo 826013 (IMPRESSIVE).Photovoltaic cells based on semiconductor technology are, nowadays, the most efficient and easily available systems for solar energy conversion. Dye-Sensitized SolarCells (DSSCs) are very promising owing to low production costs, transparency and ability to harvest diffused light.1 Building Integrated PhotoVoltaics (BIPV) based onDSSC are an emerging application to make DSSC more attractive in the energy production field. An innovative and powerful approach resides on the implementationof colourless DSSCs based on NIR sensitizers such as polymethine and rylene dyes.2,3 In this work, we present the synthesis of two quaterrylene dyes to evaluate theirapplication as NIR-sensitizers in DSSCs.Quaterrylene dyes: synthesis and characterizationThe quaterrylene dyes are synthetized following a three stage strategy: construction of the rylene scaffold, functionalization of the core and, finally, hydrolysis torelease the anhydride group as anchoring moiety. Tert-octylphenol substituents are chosen to improve the processability alongside to hinder the π-π stacking duringthe dye-loading on the TiO2 surface.400 500 600 700 800 900 1000 11000,00,20,40,60,81,0 7 10AbsorbanceWavelenght / nmDye 10 overcomes the solubility and processability issues and we will expect that the bulky substituents will lower the π-π stacking, improving the device’s performance.Preliminary study in DSSCDye 7 was applied in DSSC to explore the dye-loading procedure on TiO2surface. As expected, the lack of substituents on the rylene affect theperformance of the device alongside the dye’s properties: (i) poor solubility inorganic olvents, (ii) low efficiency due to the excited-state decay processpromoted by the stacked dye’s molecules.Dye 10 is still under investigation…Both dyes have optimal HOMO and LUMO energylevels that guarantee a proper electron injectionand dye-regeneration process.Dye 10 overcomes the solubility and processability issues and we will expectthat the bulky substituents will lower the π-π stacking, improving the device’sperformance.7 on TiO2(6 μm on FTO)JSC (mA/cm2)VOC (V)FFη (%)0,870,39490,007

Synthesis of Quaterrylene-based Dyes as possible NIR sensitizers in Dye-Sensitized Solar Cells

https://iris.unito.it/bitstream/2318/1784236/1/Poster_Giordano_RSCPoster%20Twitter%20conference_Finale.pdf

Synthesis of Quaterrylene-based Dyes as possible NIR sensitizers in Dye-Sensitized Solar Cells

Abstract

Similar works

Full text

Available Versions

Institutional Research Information System University of Turin