title: Thermal annealing effect on poly(3-hexylthiophene): fullerene:copper-phthalocyanine ternary photoactive layer.
abstract: We have fabricated poly(3-hexylthiophene) (P3HT)/copper phthalocyanine (CuPc)/fullerene (C60) ternary blend films. This photoactive layer is sandwiched between an indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT/PSS) photoanode and a bathocuproine (BCP)/aluminium photocathode. The thin films have been characterized by atomic force microscope (AFM) and ultraviolet/visible spectroscopy in order to study the influence of P3HT doping on the morphological and optical properties of the photoactive layer. We have also compared the I-V characteristics of three different organic solar cells: ITO/PEDOT:PSS/CuPc₀.₅:C60₀.₅/BCP/Al and ITO/PEDOT:PSS/P3HT₀.₃:CuPc₀.₃:C60₀.₄/BCP/Al with and without annealing. Both structures show good photovoltaic behaviour. Indeed, the incorporation of P3HT into CuPc:C60 thin film improves all the photovoltaic characteristics. We have also seen that thermal annealing significantly improves the optical absorption ability and stabilizes the organic solar cells making it more robust to chemical degradation.
authors.affiliation: Laboratoire de Photovoltaïques, Centre de Recherches et des Technologies de l'Energie, BP 95, 2050 Hammam-Lif, Tunisia. hderouiche@yahoo.fr
authors.forename: H
authors.initials: H
authors.lastname: Derouiche
authors.forename: A B
authors.initials: AB
authors.lastname: Mohamed
mesh_terms: D003300:Copper / Q000737:chemistry* / Q000528:radiation effects; D011211:Electric Power Supplies; D004867:Equipment Design; D019544:Equipment Failure Analysis; D037741:Fullerenes / Q000737:chemistry* / Q000528:radiation effects; D006244:Hardness; D006358:Hot Temperature; D007211:Indoles / Q000737:chemistry* / Q000528:radiation effects; D054833:Isoindoles; D008027:Light; D008422:Materials Testing; D008567:Membranes, Artificial; D016566:Organoselenium Compounds / Q000737:chemistry* / Q000528:radiation effects; D012993:Solar Energy
chemical_list: D037741:Fullerenes; D007211:Indoles; D054833:Isoindoles; D008567:Membranes, Artificial; D016566:Organoselenium Compounds; C526212:poly(3-hexyl)selenophene; D003300:Copper; C013647:phthalocyanine