Abstract
The proposed work reports that ZnO nanoflowers were grown on fluorine-doped tin oxide (FTO) substrates via a solution process at low temperature. The high purity and well-crystalline behavior of ZnO nanoflowers were established by X-ray diffraction. The morphological characteristics of ZnO nanoflowers were clearly revealed that the grown flower structures were in high density with 3D floral structure comprising of small rods assembled as petals. Using UV absorption and Raman spectroscopy, the optical and structural properties of the ZnO nanoflowers were studied. The photoelectrochemical properties of the ZnO nanoflowers were studied by utilizing as a photoanode for the manufacture of dye-sensitized solar cells (DSSCs). The fabricated DSSC with ZnO nanoflowers photoanode attained reasonable overall conversion efficiency of ~1.40% and a short-circuit current density (JSC) of ~4.22 mA cm−2 with an open circuit voltage (VOC) of 0.615 V and a fill factor (FF) of ~0.54. ZnO nanostructures have given rise to possible utilization as an inexpensive and efficient photoanode materials for DSSCs.
Highlights
People need to step up efforts to find highly efficient and renewable energy sources to maintain social and economic development [1,2,3,4,5]
FTO2019, substrate evident that the zinc oxide (ZnO) nanoflowers grow perpendicular to the fluorine-doped tin oxide (FTO) substrate Crystals
Nanostructures with high crystallinity were directly synthesized on FTO substrate and successfully nanostructures with high crystallinity were directly synthesized on FTO substrate and successfully applied as photoanodes for the manufacturing of dye-sensitized solar cells (DSSCs)
Summary
People need to step up efforts to find highly efficient and renewable energy sources to maintain social and economic development [1,2,3,4,5]. Other than TiO2 photoanode, zinc oxide (ZnO) nanomaterials are shown a great potential as an excellent wide-bandgap oxide semiconductor for photoanode in DSSCs because ZnO presents the similar band position and electron affinities along with high electron diffusivity and high electron mobility of 115 to 155 cm V−1 s−1 , in comparison with TiO2 [11,12,13,14]. These special properties of ZnO are reflected to help in reduction
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