Abstract
A new ionic liquid, 1-vinyl-3-heptylimidazolium iodide (VHpII), was synthesized and applied as a redox electrolyte for dye-sensitized solar cells. The chemical structure of the synthesized VHpII was confirmed using 1H NMR. Thermogravimetric analysis showed that the VHpII was stable for thermal stress of up to 250°C. The energy conversion efficiencies of the VHpII-based dyesensitized solar cells were investigated in terms of the effect of a lithium iodide addition. A solar cell containing the redox couple of VHpII and iodine showed a conversion efficiency of 2.63% under 1 sun light intensity at AM 1.5. Adding 0.4 M LiI results in a conversion efficiency of 3.63%, which was an improvement of about 40%. The increased conversion efficiency was ascribed to an increase in external quantum efficiency.
| Original language | English |
|---|---|
| Pages (from-to) | 647-652 |
| Number of pages | 6 |
| Journal | ETRI Journal |
| Volume | 26 |
| Issue number | 6 |
| DOIs | |
| State | Published - Dec 2004 |
| Externally published | Yes |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- 1-vinyl-3-heptylimidazolium iodide
- Dye-sensitized solar cell
- Ionic liquid
- Molten salt
- Redox electrolyte
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