期刊
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
卷 84, 期 1, 页码 206-213出版社
SPRINGER
DOI: 10.1007/s10971-017-4488-7
关键词
SnO2 nanoparticles; Proteic sol-gel method; Dye-sensitized solar cells; Emerging technologies
资金
- Fundacao Cearense de Apoio ao Desenvolvimento Cientfico e Tecnologico (FUNCAP)
- Conselho Nacional de Desenvolvimento Cientfico e Tecnologico (CNPq)
Tin dioxide nanoparticles were synthesized by the proteic sol-gel method. Tin chloride (SnCl4 center dot 5H(2)O) was used as source of Sn4+ and commercial gelatin as organic precursor. Several calcination temperatures were employed. Thermogravimetric analysis and differential scanning calorimetry were performed to investigate the thermal behavior of the precursor powders as well as to select the appropriate calcination temperatures for oxide formation. Structural, morphological, and optical properties of the synthesized materials were studied by X-ray diffraction, transmission electron microscopy, Fourier transformed infrared spectroscopy, and ultraviolet-visible spectroscopy. The results confirmed the formation of spherical nanoparticles of rutile SnO2 with an optical absorption band in the ultraviolet region near the visible light range. Thermally treated samples showed improved crystallinity and superior transparency to visible light. These SnO2 nanoparticles were successfully employed as photoanode material in dye-sensitized solar cells. The performance of the cells was evaluated by measuring J x V curves in a solar simulator and was found to be in line with results in the literature.
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