LiI Enhances the Performance of Dye-Sensitized Solar Cell with Fluorinated Oligomer Gel Electrolyte

Addition of Pyridine to Dye-Sensitized Solar Cell Including Fluorinated Oligomer Gel Electrolyte

“…The electrical conductivity of each type of the cell is shown in Figure 3. As reported before [9], these kinds of samples showed 16.7 mS/cm at most without pyridine. From comparing data in Figure 3 with reported data without pyridine, it was confirmed that the electric conductivity was enhanced by adding pyridine in the electrolyte.…”

“…We used two kinds of ionic liquids: 1-ethyl-3-methylimidazolium trifluoromethanesulfonate (Mi) and 3-methylpyrazolium tetrafluoroborate (Mp). The mixing ratio of DMSO and ionic liquids and the LiI concentration was varied with the type of ionic liquids in order to achieve the highest electric conduction of the obtained electrolyte as reported before [9] [10]. For the Mi case, 15mmol/g of LiI was added to DMSO and mixed with Mi at the volume ratio of Mi:DMSO = 1:9.…”

“…We have been studying various aspects of the solar cell with the fluorinated oligomer gel electrolyte. The issues investigated so far are, for example, the TiO 2 particle [7], the Pt layer on the anode [8], LiI effect instead of I 2 [9], and the introduction of ionic liquids [10], In this article, the addition of pyridine to the electrolyte is considered. Pyridine complex derivatives have been introduced to enhance the cell performance.…”

Electric Conductivity of Fluorinated Oligomer Gel Electrolyte Including Ionic Liquid and Performance of Dye Sensitized Solar Cell

“…LiI was mixed with the solvent of dimethyl sulfoxide (DMSO) and I 2 was not added because LiI plays more important role as reported before [10] For assembling the solar cell, a cathode and an anode were prepared on FTO glass substrates. The slurry including TiO 2 with 50 to 70 nm in diameter (by Sumitomo titanium) was mixed for 15 minutes with P-25 and polyethylene glycol, each at the same weight, and triton X (15 μl) for raising its viscosity.…”

“…The experimental conditions such as the TiO 2 layer on the cathode [8], the amount of Pt sputtering deposition on the anode [9], and LiI concentration in the gel electrolyte [10]. The introduction of ionic liquid has been also considered [11].…”