Abstract
A novel surface modifier, ethylenediamine tetraacetic acid tetrasodium salt (EDTNa), was incorporated on the surface of TiO2, and the resulting electrodes were applied to the photoanode of dye-sensitized solar cells (DSSCs). The DSSC with EDTNa-incorporated photoelectrode showed an increase in short-circuit current (Jsc) and open-circuit voltage (Voc), resulting in a 16.5% enhancement in power conversion efficiency, compared to that of reference cell without EDTNa. It was found that the presence of the bulky ethylenediamine tetraacetate moieties increases lifetime of electrons injected from dye molecules to TiO2, resulting from an effective prevention of direct contact between electrolyte ions and the Ti02 surface. This improvement of lifetime induced the enhancement in Jsc and Voc.
Original language | English |
---|---|
Pages (from-to) | 1507-1510 |
Number of pages | 4 |
Journal | Journal of Nanoscience and Nanotechnology |
Volume | 15 |
Issue number | 2 |
DOIs | |
State | Published - 1 Feb 2015 |
Keywords
- Dye-sensitized solar cells
- Electron lifetime
- Photoelectrode
- Surface modifier