Green synthesis and characterization of Graphene/SnO₂ nanocomposite photoanodes for enhanced DSSC performance

Simple item page
dc.contributor.authorOjo A O
dc.contributor.authorAdedokun K A
dc.contributor.authorGbadero D S
dc.contributor.authorOyetunji E O
dc.contributor.authorAdegboyega O
dc.contributor.authorEgbeyale G B
dc.contributor.authorAjani A S
dc.contributor.authorAwodele M K
dc.contributor.authorAdedokun O
dc.date.accessioned2025-10-30T13:09:55Z
dc.date.available2025-10-30T13:09:55Z
dc.date.issued2025
dc.description.abstractDye-sensitized solar cells (DSSCs) offer a compelling alternative to conventional silicon-based solar cells due to their cost-effectiveness, flexibility, and relatively high efficiency. However, their performance is currently hindered by the photoanode material, typically titanium dioxide (TiO₂). This study aims to develop a green synthesis method for graphene/tin dioxide nanocomposites (G/ SnO₂ NCs) using Bryophyllum pinnatum extract for DSSC applications. SnO₂ nanoparticles (SnO2 NPs) were synthesized using a green method with Bryophyllum pinnatum extract and integrated with biomass-derived graphene to fabricate G/SnO₂ NCs for DSSC applications. Characterization techniques, including UV-Vis spectroscopy, XRD, FTIR, SEM, and EDX, were employed to analyze the optical, structural, functional, morphological, and elemental compositional properties of graphene, SnO₂, and the G/SnO₂ NCs. The photoanode thin films were deposited using the doctor blade technique, and their electrical properties were evaluated using four-point probe measurements. Results demonstrate that the G/SnO₂ NCs exhibit significantly enhanced electrical conductivity (0.148 S/m) compared to pristine SnO₂ (0.098 S/m) and graphene (0.122 S/m), indicating improved charge transport properties within the composite material. This enhancement is attributed to the synergistic effect of the high electron mobility of SnO₂ and the excellent conductivity of graphene. Furthermore, the G/SnO₂ NCs exhibit lower sheet resistance (549.48 Ω), further suggesting its potential for efficient charge collection in DSSC applications. The graphene/SnO₂ nanocomposites exhibited enhanced electrical conductivity, improved charge transport properties, and lower sheet resistance compared to pristine SnO₂ and graphene. These findings suggest that the synergistic combination of SnO₂ and graphene offers a promising pathway to improved efficiency in DSSC applications. This research contributes to the development of sustainable and cost-effective solar energy solutions, offering a promising alternative to conventional silicon-based solar cells.
dc.identifier.issn2782-8174
dc.identifier.urihttps://kwasuspace.kwasu.edu.ng/handle/123456789/6312
dc.language.isoen
dc.publisherNano Plus: Sci. Tech.
dc.titleGreen synthesis and characterization of Graphene/SnO₂ nanocomposite photoanodes for enhanced DSSC performance
dc.typeArticle
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Green synthesis and characterization of Graphene_.pdf
Size:
1.16 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed to upon submission
Description:
Download
Collections
Scholarly Publication