Polymer Gel Electrolytes for Indoor and Outdoor Dye-sensitized Solar Cells: Comprehensive Comparison and Perspectives
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초록
내용
The impact of the iodine, cobalt- and copper-complex redox shuttles in polymer gel electrolytes (PGEs) for indoor and outdoor quasi-solid-state dye-sensitized solar cells (QSS DSSCs) was investigated. The power conversion efficiency (PCE) of iodide mediated QSS DSSCs was comparable with liquid electrolyte (LE)-devices under both standard AM 1.5G 1-sun condition and ambient light. However, the PCEs for QSS organic DSSCs using metal-complex redox shuttles were not comparable with their LE DSSCs under the 1-sun condition, due to their much lower diffusion coefficient. Surprisingly, the photovoltaic performance of metal-complex mediated QSS organic DSSCs were higher rather than the corresponding LE-devices under ambient light. The outstanding efficiency and better stability under ambient light make us optimistic for future commercialization of metal-complex mediated QSS DSSCs as a safe power source for the internet of things and low-powered autonomous electronic devices.