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학술지 A New Ionic Liquid for a Redox Electrolyte of Dye?Sensitized Solar Cells
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저자
강만구, 류광선, 장순호, 박남규
발행일
200412
출처
ETRI Journal, v.26 no.6, pp.647-652
ISSN
1225-6463
출판사
한국전자통신연구원 (ETRI)
DOI
https://dx.doi.org/10.4218/etrij.04.0103.0152
협약과제
03PB1100, 혼성 마이크로 동력원 개발, 박남규
초록
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.
키워드
1-vinyl-3-heptylimidazolium iodide, Dye-sensitized solar cell, Ionic liquid, Molten salt, Redox electrolyte
KSP 제안 키워드
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
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