Deposition ofcadmiumselenidesemiconductor nanostructuresonTiO۲ surfaceviadifferentchemical methodsandinvestigationoftheireffectsondye sensitized solarcellefficiency

چکیده مقاله

In thisworkTiO2 P25 isdepositedsuccessfullyonthefluorinedopedtinoxide(FTO)glass by electrophoresis(EPD)method.Differentchemicalmethodsareservedfordepositionof nanosizedCdSesuchassuccessiveionlayeradsorptionandreaction(SILAR)anddrop- cast. Dyesensitizedsolarcellsarefabricatedfrompreparedelectrodes,Ptascounter electrode, dyesolutionandelectrolyte.Theeffectofchemicaldepositionmethodsis investigatedonsurfacequality,opticalpropertiesandsolarcellefficiency.Theelectrodes are characterizedbyX-raydiffractionpattern(XRD),scanningelectronmicroscopy(SEM), cross-section SEM,UV–vis diffusereflectancespectroscopy(DRS),energydispersiveX-ray analysis(EDX)spectroscopy,atomicforcemicroscopy(AFM)andUV–vis spectroscopy. Dye-sensitizedsolarcells(DSSC)madebythefabricatedelectrodesareinvestigatedby current density–voltage (J–V) curve.Itwasfoundthatdepositionmethodplaysimportant role inthesurfacefeatures,filmthickness,crystallinity,opticalpropertiesandbandgap, dyeadsorptionvalueandsolarcellperformance.ItalsowasconcludedthatSILARmethod is thebesttechniquefordepositionofCdSeonTiO2 surface forusingindye-sensitized solar cell.