Abstract

Inthis paper, we have investigated the possibility to realize a nanocomposite buffer layer for perovskite solar cells, based on polyelectrolyte poly(3,4-ethylenedioxythiophene): poly(styrene sulfonate) PEDOT:PSS and graphene oxide (GO). To this aim, GO, prepared by a modified Hummers method, was mixed with PEDOT: PSS by solvent swelling method and reduced in situ into the polymer matrix through a green and simple method, by using UV radiation. Thin nanocomposite layers were spin coated on different substrates and characterized by several techniques. GO reduction was first analyzed by XPS analyses, monitoring the decrease of the intensity of the peak of the oxygen groups linked to carbon. The grade of the dispersion of GO into PEDOT: PSS was also analyzed by scanning electron microscopy. Sheet resistance measurements of the films with and without GO before and after UV treatment was performed. The thermal stability of the nanocomposites was then evaluated by thermogravimetric analyses. The nanocomposite layer was finally employed in a perovskite solar cell to evaluate the effect of GO reduction on power conversion efficiency. The interface interaction between the nanocomposite and the perovskite precursors was analyzed by contact angle measurements.

Autore Pugliese

• Colella Silvia , Rella Simona , Gigli Giuseppe , Esposito Corcione Carola , Malitesta Cosimino , Listorti Andrea

Tutti gli autori

• Giuri A. , Masi S. , Colella S. , Listorti A. , Rizzo A. , Gigli G. , Liscio A. , Treossi E. , Palermo V. , Rella S. , Malitesta C. , Esposito Corcione C.

Titolo volume/Rivista

IEEE TRANSACTIONS ON NANOTECHNOLOGY

Anno di pubblicazione

2016

ISSN

1536-125X

ISBN

Non Disponibile

Numero di citazioni Wos

5

Ultimo Aggiornamento Citazioni

27/04/2018

Numero di citazioni Scopus

6

Ultimo Aggiornamento Citazioni

28/04/2018

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile