期刊
ORGANIC ELECTRONICS
卷 15, 期 12, 页码 3715-3722出版社
ELSEVIER
DOI: 10.1016/j.orgel.2014.10.018
关键词
Dye-sensitized solar cell; TiO2 nanotubes; Anodic oxidation; Hemi-squaraine dye; Iodine-free electrolyte; Polymer electrolyte
资金
- Regione Piemonte Poli di Innovazione Programme under grant agreement Project FLEXMAT
Back-illuminated Dye-Sensitized Solar Cells (DSSCs) have been fabricated employing TiO2 nanotube (NT) arrays grown on a flexible Ti foil as a working electrode, an organic hemisquaraine-based dye (CT1) as sensitizer, and a iodine-free transparent redox mediator (both in liquid and quasi-solid configuration) as electrolyte. The structural and morphological properties of the photoanodes and the obtained electrical performances on the final DSSC devices reaching conversion efficiencies values up to 2% are presented and discussed. The feasibility of a back-illuminated solar cell without corrosive and light-absorbing iodine-based electrolytes, metal-laden sensitizers and nanoparticles-based anodes has been demonstrated. Our work opens the way toward low-cost, non-polluting and flexible cells, proposing for the first time a solution for overcoming the limit of a low light harvesting in back-illuminated DSSCs. (C) 2014 Elsevier B.V. All rights reserved.
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