Rheological and physical characterization of PEDOT: PSS/graphene oxide nanocomposites for perovskite solar cells

Giuri, Antonella and Masi, Sofia and Colella, Silvia and Listorti, Andrea and Rizzo, Aurora and Kotuvn, Alessandro and Dell’Elce, Simone and Liscio, Andrea and Esposito Corcione, Carola Rheological and physical characterization of PEDOT: PSS/graphene oxide nanocomposites for perovskite solar cells. Polymer Engineering & Science. ISSN 1548-2634 (In Press)

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Abstract

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.

Item Type: Article
Subjects: 500 Scienze naturali e Matematica > 540 Chimica e scienze connesse
Depositing User: Dr Aurora Rizzo
Date Deposited: 08 Mar 2017 11:02
Last Modified: 08 Mar 2017 11:02
URI: http://eprints.bice.rm.cnr.it/id/eprint/16061

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