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Rheological and physical characterization of PEDOT : PSS /graphene oxide nanocomposites for perovskite solar cells
Author(s) -
Giuri Antonella,
Masi Sofia,
Colella Silvia,
Listorti Andrea,
Rizzo Aurora,
Kovtun Alessandro,
Dell'Elce Simone,
Liscio Andrea,
Esposito Corcione Carola
Publication year - 2017
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.24554
Subject(s) - materials science , pedot:pss , nanocomposite , indium tin oxide , poly(3,4 ethylenedioxythiophene) , graphene , chemical engineering , perovskite (structure) , thermal stability , contact angle , wetting , oxide , composite material , polymer , nanotechnology , layer (electronics) , engineering , metallurgy
In this work, the influence of graphene oxide (GO) doped poly(3,4 ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin nanocomposite on an indium–tin‐oxide (ITO) anode, as hole transport layer (HTL) in perovskite solar cells, was investigated. Different concentrations of GO were added into the PEDOT:PSS in order to enhance its conductivity. In particular, the influence of GO content on the rheological and thermal properties of poly(3,4‐ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS)/GO nanocomposites was initially examined. The GO filler was prepared by using modified Hummers method and dispersed into PEDOT:PSS in different quantity (ranging from 0.05 to 0.25%wt/wt). The obtained nanocomposite solutions were analyzed by rheological characterizations in order to evaluate the influence of the GO filler on the viscosity of the PEDOT:PSS matrix. The wettability of solutions was evaluated by Contact Angle (CA) measurements. The quality of GO dispersion into the polymer matrix was studied using Scanning electron microscopy (SEM) and X‐ray diffraction (XRD). Thermal characterizations (DSC and TGA) were, finally, applied on nanocomposite films in order to evaluate thermal stability of the films as well as to indirectly comprehend the GO influence on PEDOT:PSS‐water links. POLYM. ENG. SCI., 57:546–552, 2017. © 2017 Society of Plastics Engineers