Research Paper: Fabrication of DSSCs Based on Ag-Decorated TiO2 Nanofiber Photoanodes

Document Type : Research Paper

Authors

1 Assistant Professor, Faculty of Science and Engineering, Department of Physics, Sari Branch, Islamic Azad University, Sari, Iran

2 Professor, S. U. Umarov Physical-Technical Institute of the National Academy of Sciences of Tajikistan, Republic of Tajikistan, Dushanbe, Tajikistan Bogolubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, 141980, Moscow Region, Russia.

3 Assistant Professor, S. U. Umarov Physical-Technical Institute of the National Academy of Sciences of Tajikistan, Republic of Tajikistan, Dushanbe, Tajikistan.

Abstract

Dye-sensitized solar cells (DSSCs) are cheap and earth abundant solar cells that require novel ideas for further improvement. In this study, we use TiO2 nanofibers to fabricate the DSSCs photoanode. In order to isolate the transparent conductive oxide from the electrolyte species, we deposit a spin-coated TiO2 blocking layer. The characteristics of this cell are further improved by decorating the nanofibers with Ag nanoparticles which generate surface plasmonic resonances. It is shown that LSPRs increase the generated current in the cells by providing a higher light absorption and lower recombination. Our best cell showed an efficiency of 6.19%, which is a significant improvement in comparison to the bare DSSC with 4.84% efficiency.

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