Effective redox shuttles for polymer gel electrolytes-based quasi-solid-state dye-sensitized solar cells in outdoor and indoor applications: comprehensive comparison and guidelines
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초록
내용
Iodine, cobalt, and copper redox-mediated polymer gel electrolytes (PGEs) were utilized individually to fabricate quasi-solid-state (QSS) dye-sensitized solar cells (DSSCs) for outdoor and indoor applications. The power conversion efficiency (PCE) of QSS-device based on I3-/I- mediated-PGEs was comparable with liquid electrolyte (LEs)-devices under both 1-sun and 1000 lux CFL (compact fluorescent lamp) ambient light illumination. However, the PCEs for QSS-DSSCs using metal-complex redox shuttles were not comparable with their liquid DSSCs under 1-sun condition. Comparable and record PCEs of 27.5% and 25.0% were obtained under 1000 lux CFL light for Co- and Cu-complex redox-mediated PGEs-based QSS DSSCs. This result specifies that the mass transport limitation of Co-/Cu- complexes in PGEs can only be applicable for 1-sun illumination, not for ambient lighting.