CNR-ISOF Nanochemistry
Published March 13, 2017 | Version v1
Journal article Open

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

Creators

  • 1. Dipartimento di Ingegneria dell'Innovazione, Universit  a del Salento, via per Monteroni, km 1, Lecce 73100, Italy
  • 2. stituto di Nanotecnologia CNR-Nanotec, Polo di Nanotecnologia c/o Campus Ecotekne, via Monteroni, Lecce 73100, Italy
  • 3. Dipartimento di Matematica e Fisica "E. De Giorgi", Universit  a del Salento, Via Arnesano snc, Lecce 73100, Italy
  • 4. Istituto di Nanotecnologia CNR-Nanotec, Polo di Nanotecnologia c/o Campus Ecotekne, via Monteroni, Lecce 73100, Italy
  • 5. Istituto per la Sintesi Organica e la Fotoreattivit  a CNR-ISOF, via Gobetti 101, Bologna 40120, Italy
  • 6. Istituto dei Sistemi Complessi CNR-ISC, via del Fosso del Cavaliere 100, 00133 Roma, Italy

Description

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.

Files

[Polym. Eng. Sci.] Rheological and physical characterization of PEDOT.pdf

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Additional details

Funding

GrapheneCore1 – Graphene-based disruptive technologies 696656
European Commission
iSwitch – Integrated self-assembled SWITCHable systems and materials: towards responsive organic electronics – a multi-site innovative training action 642196
European Commission