Eco-Friendly Dye-Sensitized Solar Cells Based on Water-Electrolytes and Chlorophyll

Materials

卷:14

Dong-Hyuk Lim¹  So-Young Lim¹  Sung-Yoon Park¹  Hyung-Jun Koo¹  Ji-Hye Kim²  Jonghoon Choi³ 

[1] Department of Chemical & Biomolecular Engineering, Seoul National University of Science & Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea;

[2] Department of New Energy Engineering, Seoul National University of Science & Technology,232 Gongneung-ro, Nowon-gu, Seoul 01811, Korea;

[3] School of Integrative Engineering, Chung-Ang University, Seoul 06974, Korea;

关键词: dye-sensitized solar cells;    aqueous electrolyte;    chlorophyll;    plasma treatment;    eco-friendly devices;   

DOI  :  10.3390/ma14092150

来源: DOAJ

【 摘 要 】

Organic solvents used for electrolytes of dye-sensitized solar cells (DSSCs) are generally not only toxic and explosive but also prone to leakage due to volatility and low surface tension. The representative dyes of DSSCs are ruthenium-complex molecules, which are expensive and require a complicated synthesis process. In this paper, the eco-friendly DSSCs were presented based on water-based electrolytes and a commercially available organic dye. The effect of aging time after the device fabrication and the electrolyte composition on the photovoltaic performance of the eco-friendly DSSCs were investigated. Plasma treatment of TiO₂ was adopted to improve the dye adsorption as well as the wettability of the water-based electrolytes on TiO₂. It turned out that the plasma treatment was an effective way of improving the photovoltaic performance of the eco-friendly DSSCs by increasing the efficiency by 3.4 times. For more eco-friendly DSSCs, the organic-synthetic dye was replaced by chlorophyll extracted from spinach. With the plasma treatment, the efficiency of the eco-friendly DSSCs based on water-electrolytes and chlorophyll was comparable to those of the previously reported chlorophyll-based DSSCs with non-aqueous electrolytes.

【 授权许可】

Unknown