Mesoporous TiO2 spheres as a photoanodic material in dye-sensitized solar cells
| Autor: | Nikola Tasić, Zorica Marinković Stanojević, Zorica Branković, Milan Žunić, Uroš Lačnjevac, Martina Gilić, Tatjana Novaković, Goran Branković |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Processing and Application of Ceramics, Vol 12, Iss 4, Pp 374-382 (2018) |
| Druh dokumentu: | article |
| ISSN: | 1820-6131 2406-1034 |
| DOI: | 10.2298/PAC1804374T |
| Popis: | Mesoporous TiO2 films with spherical architectures and promising performance in dye-sensitized solar cells (DSSCs) were prepared. The morphology of the films was investigated by scanning electron microscopy. Transmission electron microscopy analysis of the spheres disclosed the elongated shape of sub-20 nm primary particles, while BET analysis revealed their high surface area of 135 m2/g. Anatase presence was observed in the films based on X-ray diffractometry, selected-area electron diffraction analysis and Raman spectroscopy analyses. Increased light scattering of the spheres in visible region was observed by UV-VIS-NIR spectroscopy. Photovoltaic performance of the operating N719-sensitized cells was tested using electrochemical impedance spectroscopy and current density-voltage (J-V) curves under simulated AM1.5 spectrum. The 0.25 cm2 cells exhibited photo-to-electric power efficiency of 4.9%, which is among noteworthy values for DSSCs with similar photoanodic structures. |
| Databáze: | Directory of Open Access Journals |
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