Improving thephotovoltaicperformanceofCdSequantumdotssensitizedsolarcells
(QDSSCs)using0.2wt%ofsinglewalledcarbonnanotubes/Titania(SWCNTs/TiO2) nano-
compositephotoanodeisreported.TheseSWCNTs/TiO2 nanocompositefilmswere
prepared bymechanicalmixingandspreadonthephotoanodebyadoctorblademethod.
The currentdensity–voltage(J–V) characteristiccurvesofsuchassembledQDSSCswere
measuredatAM1.5simulatedsunlight.SolarcellsbasedonSWCNTs/TiO2 nanocomposite
photoanode achieves58%increaseinpowerconversionefficiency(η) comparedwith
those basedonplainTiO2 NPs photoanodeunderaAM1.5simulatedsunlightandfor
dippingtimeof6h.Thesignificantimprovementof Jsc and η for CdSeQDSSCsbasedon
SWCNTs/TiO2 nanocompositephotoanodeisduetotheenhancementintheabsorptionof
the incidentlightandrapidelectrontransportthroughtheSWCNTscomparedtotheplain
TiO2 NPs. Furthermore,thelinearincreasein Jsc with increasingintensityofthesunlight
indicatesthesensitivityoftheassembledcells |
