Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 94, Issue 6, Pages 1005-1010Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2010.02.005
Keywords
Dye-sensitized solar cell; Flexible solar cell; Gel electrolyte; Polypyrrole nanoparticle; Stainless steel mesh
Funding
- National Nature Science Foundation [50973092]
- key project [2008FJ2004]
- Nature Science Foundation of Hunan Province of China [09JJ3020, 09JJ4005]
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A new type of stainless steel mesh-based flexible quasi-solid dye-sensitized solar cell (DSSC) was designed and fabricated by using electrospun TiO2 nanofibers web as a light scattering layer and stainless steel foil coated with polypyrrole (PPy) nanoparticles as counter electrode. The photovoltaic performance measurements showed that electrospun TiO2 nanofibers web was propitious to light harvesting ability and energy conversion efficiency. Cyclic voltammogram measurement revealed that PPy electrode possessed smaller charge-transfer resistance and higher electrocatalytic activity for the I-2/I- redox reaction than that of Pt electrode. A overall energy conversion efficiency (eta) of 2.36% was obtained based on a DSSC with N719 dye as sensitizer and PPy nanoparticles coated on the stainless steel foil as counter electrode, which attained 84% of the value (2.80%) of the quasi-solid DSSC with Pt foil as counter electrode. (C) 2010 Elsevier B.V. All rights reserved.
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