Tuning the Properties of Reduced Graphene Oxide‑Sr0.7Sm0.3Fe0.4Co0.6O3 Nanocomposites as Potential Photoanodes for Dye‑Sensitized Solar Cells

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dc.contributor.author Ndlovu, Samantha
dc.contributor.author Muchuweni, Edigar
dc.contributor.author Ollengo, Moses A
dc.contributor.author Nyamori, Vincent O.
dc.date.accessioned 2023-07-19T06:36:01Z
dc.date.available 2023-07-19T06:36:01Z
dc.date.issued 2023-05-02
dc.identifier.uri https://link.springer.com/article/10.1007/s11664-023-10526-3
dc.identifier.uri http://repository.dkut.ac.ke:8080/xmlui/handle/123456789/8015
dc.description.abstract The generation of electricity using solar energy is an efective system to overcome the current global energy crisis. In this regard, developing new semiconductor materials can be of great interest in overcoming the challenge of charge carrier recombination and, hence, improving the power conversion efciency (PCE) in photovoltaic devices, particularly dye-sensitized solar cells (DSSCs). Here, reduced graphene oxide-Sr0.7Sm0.3Fe0.6Co0.4O3 (RGO-SSFC) nanocomposites were synthesized using the hydrothermal method and characterized with the aid of microscopic and spectroscopic techniques, as well as a vibrating sample magnetometer, and further tested for application as photoanodes in DSSCs. Scanning electron microscopy revealed the presence of RGO nanosheets that were fully decorated by irregular- and spherical-shaped SSFC nanoparticles. Fourier-transform infrared spectroscopy confrmed the strong synergistic interaction of the RGO-SSFC nanocomposites. The large surface area of RGO-SSFC nanocomposite photoanodes facilitated efective dye loading, high photon absorption, and efcient electron transfer, resulting in better device performance. Compared to RGO-SSFC-0.1 and RGO-SSFC-1.0, the RGO-SSFC-0.5 nanocomposite showed an enhanced open-circuit voltage (Voc) of 0.84 V, short-circuit current density (Jsc) of 14.02 mA cm−2 , and a PCE of 7.25%. Eosin B and MK-2 organic dyes used as photosensitizers coated on the RGO-SSFC semiconductors resulted in low-cost DSSC photoanodes. en_US
dc.language.iso en en_US
dc.publisher springer publishers en_US
dc.subject Dye-sensitized solar cell · graphene · nanocomposites · organic dyes · perovskite oxides · semiconductors en_US
dc.title Tuning the Properties of Reduced Graphene Oxide‑Sr0.7Sm0.3Fe0.4Co0.6O3 Nanocomposites as Potential Photoanodes for Dye‑Sensitized Solar Cells en_US
dc.type Article en_US


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