期刊
PROCESSING AND APPLICATION OF CERAMICS
卷 12, 期 4, 页码 374-382出版社
UNIV NOVI SAD, FAC TECHNOLOGY
DOI: 10.2298/PAC1804374T
关键词
dye-sensitized solar cells (DSSCs); TiO2; photoanode; mesoporous spheres
资金
- Serbian Ministry of Education, Science and Technological Development [III45007]
- Bilateral Project between the Republic of Serbia and Republic of Slovenia [451-03-3095/2014-09-32]
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-20nm primary particles, while BET analysis revealed their high surface area of 135 m(2)/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 AMI. 5 spectrum. The 0.25 cm(2) cells exhibited photo-to-electric power efficiency of 4.9%, which is among noteworthy values for DSSCs with similar photoanodic structures.
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