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S. Fabiano and B. Pignataro, Phys. Chem. Chem. Phys. 2010, DOI:10.1039/C0CP01012J

Preparation and characterization tools for engineering molecular thin films with a nanoscale 3D order move up different emerging applications. S. Fabiano and B. Pignataro, Phys. Chem. Chem. Phys. 2010, DOI:10.1039/C0CP01012J. Flexible Organic-based Photovoltaics – Potential Applications.

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S. Fabiano and B. Pignataro, Phys. Chem. Chem. Phys. 2010, DOI:10.1039/C0CP01012J

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  1. Preparation and characterization tools for engineering molecular thin films with a nanoscale 3D order move up different emerging applications. S. Fabiano and B. Pignataro, Phys. Chem. Chem. Phys. 2010, DOI:10.1039/C0CP01012J

  2. Flexible Organic-based Photovoltaics – Potential Applications

  3. Photovoltaic Effect in a BHJ e LUMO ex h+ e- LUMO HOMO Al ITO Anode Cathode ELECTRIC FIELD HOMO Main steps Solar Light Absorption Light-induced exciton formation Exciton diffusion Exciton Dissociation Free Charge Carriers migration LUMO ITO ITO LUMO Al Al HOMO HOMO donor acceptor

  4. Organoboronpolymersfor PV BHJs poly(3-hexylthiophene) LUMO poly[(1,4-divinylenephenylene)(2,4,6-triisopropylphenylborane)] HOMO Three-coordinate boron polymers for the first time as electron acceptors (vacant 2p orbitals conjugated with adjacent p-systems) E = 2.62 eV (472 nm) f = 2.843

  5. P3HT/PDB BHJ devices P3HT PDB PEDOT:PSS LUMOD α 0.35 eV 3.50 eV LUMOA LiF/Al 3.85 eV 4.10 eV β 1.35 eV ITO Eg=1.7 eV 4.70 eV HOMOD 5.10 eV 5.20 eV Voc = 1V; Isc = 6 mA/cm2; h = 2-3% Absorbance (a.u.) Irradiance (W/m2nm) Voc= 0.69 V, Jsc = 5.02 mA/cm2, ; h = 3% tris(thienylenevinylene) substituted polythiophene and poly[perylenediimide-alt-bis(dithienothiophene)], Z. Tan et al., Appl. Phys. Lett. 2008, 93, 073309. HOMOA 6.65 eV Wavelenght (nm)

  6. P3HT/PDB BHJ domain size 100 nm 100 nm 100 nm 35 de 50:50 20:80 80:20 0 S. Cataldo, S. Fabiano, F. Ferrante, F. Previti, S. Patanè, B. Pignataro, Macromolecular Rapid Communication 31 (2010) 1281-1286

  7. Nanoengineering in 3D • We want to develop low cost and simple methods enabling to: • Have a high control on the dimension, continuity, density of D/A domains • Guarantee the optical/electronic properties of D/A • Prepare BHJs by D and A systems that may be soluble also in different solvents

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