Impact of preparation method of TiO2-RGO nanocomposite photoanodes on the performance of dye-sensitized solar cells

Esmaiel Nouri, Mohammad Reza Mohammadi, Panagiotis Lianos (Lead / Corresponding author)

    Research output: Contribution to journalArticle

    25 Citations (Scopus)

    Abstract

    In this work, a comparative study has been performed on two ex-situ and one in-situ doping of titania photoanodes with reduced graphene oxide. The presence of finely dispersed reduced graphene oxide facilitates electron transport and reduces electron-hole recombination resulting in a better performance of doped titania photoanodes. It was found that in-situ doping, i.e. introduction of graphene oxide in solution together with titania precursor was the most performant case of graphene doping. This result was obvious by studying dye-sensitized solar cells based on such doped photoanodes but was also and mainly analytically demonstrated by subjecting the obtained materials to characterization by several techniques, including thermal and N2 adsorption-desorption analysis, SEM and TEM microscopy and XRD, XPS, Raman, UV–vis, Photoluminescence and Electrochemical Impedance Spectroscopy.

    Original languageEnglish
    Pages (from-to)38-48
    Number of pages11
    JournalElectrochimica Acta
    Volume219
    Early online date29 Sep 2016
    DOIs
    Publication statusPublished - 20 Nov 2016

    Keywords

    • dye-sensitized solar cells
    • ex-situ and in-situ methods
    • titania-graphene nanocomposites

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