Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 80, Issue 2, Pages 167-179Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.solmat.2003.08.001
Keywords
dye-sensitized solar cell; electrolyte; alkylpyridines; additive
Ask authors/readers for more resources
The influence of alkylpyridines additive to an I-/I-3(-) redox electrolyte in acetonitrile on the performance of a bis(tetrabutylammonium)cis-bis(thiocyanato)bis(2,2'-bipyridine-4-carboxylic acid, 4'-carboxylate)ruthenium(II) dye-sensitized TiO2 solar cell was studied. I-V measurements were performed using more than 30 different alkylpyridines. The alkylpyridine additives showed a significant influence on the performance of the cell. All the additives decreased the short-circuit photocurrent (J(sc)),ut most of the alkylpyridines increased the open-circuit photovoltage (V-oc) and fill factor (ff) of the solar cell. The results of the molecular orbital calculations suggest that the dipole moment of the alkylpyridine molecules correlate with the Jsc of the cell. These results also suggest that both the size and ionization energy of pyridines correlate with the V-oc of the cell. Under AM 1.5 (100 mW/cm(2)), the highest solar energy conversion efficiency (eta) of 7.6% was achieved by using 2-propylpyridine as an additive, which was more effective than the previously reported additive, 4-t-butylpyridine. (C) 2003 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available