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Investigations on the E xtension of the Life-span of a Dye-sensitized S olar C ell

Investigations on the E xtension of the Life-span of a Dye-sensitized S olar C ell. Asada Fumiya. Purpose. Dye-sensitized solar cell (DSSC) → Low cost → A variety of colors and forms Problems → Low power generation efficiency → Short-lived. Source ： Aisin Seiki.

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Investigations on the E xtension of the Life-span of a Dye-sensitized S olar C ell

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  1. Investigations on the Extension of the Life-span of a Dye-sensitized Solar Cell Asada Fumiya

  2. Purpose Dye-sensitized solar cell(DSSC) →Low cost →A variety of colors and forms Problems →Low power generation efficiency →Short-lived Source ：AisinSeiki

  3. Purpose Previous work by YonagoKosen： Using a shell membrane →Longer operating life DSSC →An experiment with only food pigment Absorption of various pigments and extension of life-span

  4. Extraction of shell membranes Extraction work of egg membranes which requires time →Consideration of how to carry out extensive extraction and to save egg membranes The rate of pigment absorption conditioned by methods of preservation →Investigation immediately afterextraction, room temperature (23 ℃), and freezing

  5. Extraction of shell membranes Results of the investigation ① Immediately after extraction and frozen storage →Dyed at the rate ofalmost 100% ② Room temperature preservation →Dyed at the rate of about 90% Determination of frozen storage

  6. Power generation principle ③Electric charge which moves Pigment ② Emitting the electron(Oxidization of pigment) ①Pigment which receives light Light I- • Electrolysis solution I2 ④Reproduction of pigment by electrolysis solution • Power generation electrode • Titanium oxide • Opposite electrode

  7. Production of DSSC (Comparison) Pigment： Stuck to titanium oxide Pigment： Stuck to a shell membrane • Titanium oxide • Titanium oxide • Shell membrane Transparent electrode

  8. Production of DSSC (Notusing egg membrane) ① One day after Extraction of pigment (Hibiscus) ③ ② Iodine liquid applied to both power generation electrodes→Combining electrodes Opposite electrode：Carbon is applied. Power generation electrode ： Pigment is applied to titanium oxide.

  9. Production of DSSC (Using egg membrane) ① ② Applying titanium oxide to a transparent electrode Absorbed pigment into egg membrane →Dipping in titanium oxide solution ③ ④ Power generation electrode ： sticking ②on ① The additional iodine liquid to a power generation electrode →Setting electrodes Opposite electrode：Applied carbon

  10. Measurement of DSSC Power generation characteristics The problem of measurement Hastening of the evaporation of electrolysis solution using ventilation Using ventilation to prevent rising temperature Fall in power generation caused by heat The necessity for encapsulation

  11. Conclusion Investigation on the method of the preservation of egg membrane →Increased efficiency in egg membrane extraction Production of two kinds of DSSCs, one with shell membrane and the other without it →① To check power generationcharacteristics ② Decision on a manufacture method and a measuring method

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