Pyridinium iodide salts, which are competitive to the conventional imidazolium iodide salts, have been used for dye-sensitized solar cells as iodide sources and ionic conductivities. Pyridinium iodide series are easy to prepare and less expensive than the imidazolium series salts. In this research, quite comparable efficiencies were obtained from electrolytes with pyridinium iodide salts. For the experiments, pyridinium salts with a few different alkyl chains are applied. When a pyridinium head is modified to picolinium, which has a methyl group on the pyridinium head, a noticeable Voc drop has been observed. However, the length of the alkyl chains on the pyridinium head does not affect Voc effectively. The oddnumbered alkyl chains showed slightly lower Voc compared to that of the even-numbered alkyl chains. Finally, the performances of the cells with pyridinium salts are compared to those of the conventional cells with imidazolium salts.
|Number of pages||5|
|Journal||ACS Applied Materials and Interfaces|
|Publication status||Published - 2011 Feb 23|
- Dye-sensitized solar cell
- Pyridinium salts
ASJC Scopus subject areas
- Materials Science(all)