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Unveiling SiO2 nanoparticle derived from rice husk doped P-type Cu2O thin films for solar cell application

Victor Sunday Aigbodion

Africa Centre of Excellence, ACE-SPED University of Nigeria, Nsukka, Nigeria



Received: 16 July 2023  Accepted: 3 October 2023


Photovoltaics is the third-largest renewable energy source in the world today due to its popularity; however, thin-film solar cells are currently replacing PV due to material limitations in large-scale applications. These cells must be developed from widely accessible, fairly cost-effective, and environmentally benign materials. Silica nanoparticles derived from rice husk (SiO2np) and doped Cu2O thin films were examined for solar cell applications. A nebulizer spray technique was used to deposit SiO2np of 0.25, 0.5, 0.75, 1, and 1.25 wt% onto Cu2O. The electrical, optical, and microstructural properties of the deposited thin films were studied. The presence of SiO2np in the Cu2O phase was observed in the XRD spectrum. The structural, optical, and electrical properties of SiO2np: Cu2O thin films were highly affected by SiO2np doping. The energy bandgap and optical transmittance are reduced with a rise in SiO2np doping. An 84.61% and 98.85% increment in mobility and carrier concentration and a 33.87% and 72.72% decrease in band gap and resistivity were obtained at 1.25 w% SiO2np:Cu2O. It was established that SiO2np:Cu2O thin films produced 0.480% power conversion efficiency and 0.30 V open-circuit voltage.

Keywords: Cu2O; Spray pyrolysis optical; Rice husk; Solar cell and microstructure

Full paper is available at

DOI: 10.1007/s11696-023-03135-1


Chemical Papers 78 (2) 981–991 (2024)

Thursday, May 23, 2024

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