BROWSE
Detail
Journal Article
A New Ionic Liquid for a Redox Electrolyte of Dye-Sensitized Solar Cells
- Authors
- Man Gu Kang, Kwang Sun Ryu, Soon Ho Chang, Nam-Gyu Park
- Issue Date
- 2004-12
- Citation
- ETRI Journal, v.26, no.6, pp.647-652
- ISSN
- 1225-6463
- Publisher
- 한국전자통신연구원 (ETRI)
- Language
- English
- Type
- Journal Article
- 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.
- KSP Keywords
- 1H NMR, Conversion efficiency(C.E.), Dye-sensitized solar cells(DSCs), Energy Conversion, External Quantum Efficiency, Lithium iodide, Redox couple, Redox electrolyte, Sun light, Thermogravimetric analysis(TG), chemical structure
This work is distributed under the term of Korea Open Government License (KOGL)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
(Type 4: : Type 1 + Commercial Use Prohibition+Change Prohibition)
