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Growth Control of SnO2 Nanoparticles Using a Low-Temperature Solution Process

Catlin Ethridge
Mechanical Engineering Department, Bradley University, Peoria, IL, USA

Lucas Splingaire
Mechanical Engineering Department, Bradley University, Peoria, IL, USA

Holly Korte
Mechanical Engineering Department, Bradley University, Peoria, IL, USA

Udo Schnupf
Mund-Lagowski Department of Chemistry and Biochemistry, Bradley University, Peoria, IL, USA

Kazuhiro Manseki
Department of Chemistry and Biomolecular Science, Gifu University, Gifu, Japan.

Takashi Sugiura
Department of Chemistry and Biomolecular Science, Gifu University, Gifu, Japan.

Saeid Vafaei
Mechanical Engineering Department, Bradley University, Peoria, IL, USA

DOI: 10.1615/TFEC2020.sol.033127
pages 555-564

Abstract

Perovskite solar cells, specifically using SnO2 nanoparticles, have been extensively researched and are proving to be extremely promising in the field of renewable energy by increasing a solar cell's overall efficiency and lowering the cost of production. In this study, an experiment was performed to synthesize SnO2 nanoparticles over 8 days. Day 1 was the synthesis which included the mixing of water, tin (II) chloride, methanol, sodium carbonate and dimethylformamide and then heated in a water bath at 28°C. Sampling of this solution started on day 4 of the experiment when sufficient particle growth was observed and stopped at day 8. Centrifuging, freezing, and freeze-drying were used for each sample to isolate the solid product. Transmission electron microscopy and X-ray powder diffraction was used to characterize the isolated nanoparticle. The results from the X-ray powder diffraction showed that each sample consisted of SnO2 nanoparticles of different sizes. From the transmission electron microscopy on the samples showed that the overall size of the nanoparticles gradually increased during each additional synthesis day.

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