This study has been performed to find a way of improving the efficiency of Dye-Sensitized Solar Cells (DSSC) using a Taguchi method. We chose number of thin film layers of TiO2 slurry, size of particles, drops of titanium(?W) butoxide, as parameters. To get high efficiency its 67% was found to be co...
This study has been performed to find a way of improving the efficiency of Dye-Sensitized Solar Cells (DSSC) using a Taguchi method. We chose number of thin film layers of TiO2 slurry, size of particles, drops of titanium(?W) butoxide, as parameters. To get high efficiency its 67% was found to be contributed from the TiO2 film layers, 32% from the size of particles, and 0.9% from titanium(?W) butoxide film. We found that the cell with the thinnest film, spin-coated with one drop (0.03 mL) of 0.2 M titanium(?W) butoxide on Florine-Doped Tin Oxide (FTO) conducting glass, put with a layer (0.0635 mm thickness) of 18 nm TiO2 slurry on the dried titanium(?W) butoxide film and a layer (0.0635 mm thickness) of 400 nm TiO2 slurry on the calcined 18 nm TiO2 film, and finally also calcined with the while films at 520??, and coated with a dye, showed the highest maximum photo-conversion efficiency (ƞmax). The cell with Dye N719, purified with a chromatographic column, showed the highest photocurrent density (Imax) of 8.03 mA/cm2, highest maximum power (Pmax) of 3.0 mW/cm2 and highest power conversion efficiency (ƞmax) of 3% under the illumination of 100 mW/cm2. The cell with Dye N3, purified with the same column as in Dye N719 showed highest photocurrent density of 6.10 mA/cm2, highest maximum power (Pmax) of 2.5 mW/cm2, and highest power conversion efficiency (ƞmax) of 2.5% under the same light illumination. Therefore, Dye N719 was found to give a little higher conversion efficiency value than Dye N3. Also, the purified dye showed about 0.3% higher photo-conversion efficiency than non-purified dye. Compared with the efficiency obtained by Shozo Yanagida, et al., our efficiency (ƞmax) was relatively low, because there was a limitation in making a thin film; our thinnest slurry layer obtained by using a scotch tape was 0.0635 mm thick. Therefore, We expect that our film thickness was thick. In result, the light could be absorbed by the thick film, reducing the available light intensity arriving at the dye molecules and also increasing the travelling distance of electrons through the film from the dye molecules. This means that we have to use tools, such as a doctor blade and screen-printers to achieve a thin film to improve the efficiency. For next experiments. We will perform the experiments in that direction.
This study has been performed to find a way of improving the efficiency of Dye-Sensitized Solar Cells (DSSC) using a Taguchi method. We chose number of thin film layers of TiO2 slurry, size of particles, drops of titanium(?W) butoxide, as parameters. To get high efficiency its 67% was found to be contributed from the TiO2 film layers, 32% from the size of particles, and 0.9% from titanium(?W) butoxide film. We found that the cell with the thinnest film, spin-coated with one drop (0.03 mL) of 0.2 M titanium(?W) butoxide on Florine-Doped Tin Oxide (FTO) conducting glass, put with a layer (0.0635 mm thickness) of 18 nm TiO2 slurry on the dried titanium(?W) butoxide film and a layer (0.0635 mm thickness) of 400 nm TiO2 slurry on the calcined 18 nm TiO2 film, and finally also calcined with the while films at 520??, and coated with a dye, showed the highest maximum photo-conversion efficiency (ƞmax). The cell with Dye N719, purified with a chromatographic column, showed the highest photocurrent density (Imax) of 8.03 mA/cm2, highest maximum power (Pmax) of 3.0 mW/cm2 and highest power conversion efficiency (ƞmax) of 3% under the illumination of 100 mW/cm2. The cell with Dye N3, purified with the same column as in Dye N719 showed highest photocurrent density of 6.10 mA/cm2, highest maximum power (Pmax) of 2.5 mW/cm2, and highest power conversion efficiency (ƞmax) of 2.5% under the same light illumination. Therefore, Dye N719 was found to give a little higher conversion efficiency value than Dye N3. Also, the purified dye showed about 0.3% higher photo-conversion efficiency than non-purified dye. Compared with the efficiency obtained by Shozo Yanagida, et al., our efficiency (ƞmax) was relatively low, because there was a limitation in making a thin film; our thinnest slurry layer obtained by using a scotch tape was 0.0635 mm thick. Therefore, We expect that our film thickness was thick. In result, the light could be absorbed by the thick film, reducing the available light intensity arriving at the dye molecules and also increasing the travelling distance of electrons through the film from the dye molecules. This means that we have to use tools, such as a doctor blade and screen-printers to achieve a thin film to improve the efficiency. For next experiments. We will perform the experiments in that direction.
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#염료감응태양전지 DSSC 다꾸치 Dye-Sensitized Solar Cells Taguchi Method
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