Stacked rGO–TiO2 photoanode via electrophoretic deposition for highly efficient dye-sensitized solar cells

A dye-sensitized solar cell (DSSC) photocurrent efficiency (PCE) could be increased by 40.9% when the dye adsorbing TiO2 layer was introduced with reduced graphene oxide (rGO) layers. Thickness of rGO layer and number of rGO layers in the TiO2 anode were optimized. TiO2 and rGO were deposited on FTO...

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Bibliographic Details
Published inOrganic electronics Vol. 59; pp. 399 - 405
Main Authors Peiris, D.S.U., Ekanayake, Piyasiri, Petra, Mohammad Iskandar
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.2018
Subjects
DSSCs
Electron transport
EPD
rGO
TiO2 photoanode
EPD
DSSCs
rGO
Electron transport
TiO2 photoanode
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Summary:A dye-sensitized solar cell (DSSC) photocurrent efficiency (PCE) could be increased by 40.9% when the dye adsorbing TiO2 layer was introduced with reduced graphene oxide (rGO) layers. Thickness of rGO layer and number of rGO layers in the TiO2 anode were optimized. TiO2 and rGO were deposited on FTO substrate by electrophoretic deposition (EPD). The thickness of the rGO containing TiO2 anode was kept constant (10–11 μm) at all the times. Three rGO layers containing TiO2 anode has shown the highest PCE of 6.2%. rGO incorporation improved electron transfer that countered recombination losses hence increasing photocurrent density (JSC) of the DSSC. [Display omitted] •Electrophoretic deposited reduced graphene oxide (rGO)-TiO2 films as used as photoanode for DSSC.•Reduced graphene oxide films can improve charge transfer and suppress charge recombination.•Conversion efficiency of 40.9% increase (to 6.2%) is obtained by rGO-TiO2 stacked structure.
ISSN:1566-1199
1878-5530
DOI:10.1016/j.orgel.2018.05.059