Abstract
Recent research is focused on few layered graphene (FLG) with various metal oxides (MOs) as (MOs; CeO2, CuO, SnO2, CdO, ZnO, and TiO2) nanocomposite materials are alternatives to critically important in the fabrication of solar cell devices. In this work, FLG with different MOs nanocomposites were prepared by a novel eco-friendly viable ultrasonic assisted route (UAR). The prepared FLG/MO nanocomposites were performed with various characterization techniques. The crystal and phase compositional were carried out through using X-ray diffraction technique. Surface morphological studies by field emission scanning electron microscope (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM). Spectroscopic methods were done by Raman and UV-Vis Diffuse reflectance spectra (UV-DRS). The prepared FLG/MO nanocomposites materials were used as a photoanode, in the fabrication of dye sensitized solar cells (DSSCs). Compared to TiO2 nanoparticles (NPs) and other FLG/MO nanocomposites, FLG/TiO2 nanocomposites exhibited superior photovoltaic properties. The obtained results indicate that FLG/TiO2 nanocomposites significantly improved the power conversion efficiency (PCE) of DSSCs. The photovoltaic analyses were performed in a solar simulator with an air mass (AM) of 1.5 G, power density of 100 m W/m2, and current density-voltage (J-V) was investigated using N719 dye.
Highlights
Solar cells are most likely to be the primary source of energy in the future
The results reveals that the CeO2 phase obtained outcomes are well aligned with the standard database of the joint committee on powder diffraction standards (JCPDS)
The present research work mainly focused on the synthesis of few layered graphene/metal oxide (CeO2, CuO, SnO2, CdO, ZnO, and TiO2 ) nanocomposites prepared by novel and straightforward ultrasonic-assisted route
Summary
Solar cells are most likely to be the primary source of energy in the future. For the development of solar cells, various methodologies have been used. The 1 G solar cells, which contain silicon, are known as conventional or wafer-based cells (polysilicon and monocrystalline) [1]. Solar cells made of crystalline silicon have achieved a PCE of up to 26.6%. They are, distinguished by difficult preparation conditions and a high cost [2,3]. Thin-film solar cells with direct bandgap semiconductors, such as gallium arsenide (GaAs), cadmium telluride (CdTe), copper indium gallium selenide (CIGS), and copper zinc tin sulphide (CZTS), are used as Sustainability 2021, 13, 7685.
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