FAPb 1−y Zn y I 3−x Br x Nanocrystals‐Based Perovskite‐Sensitized Solar Cell With Polymer Gel Electrolyte: A New Approach to Dye Sensitization

Dye‐sensitized solar cells (DSSCs) have garnered significant attention for their low‐cost fabrication and exceptional performance under low‐light conditions, positioning them as promising candidates for internet of things applications. Despite these advantages, their broader deployment has been constrained by the inherent instability and leakage risks associated with conventional liquid electrolytes. In this study, a novel perovskite‐sensitized solar cell architecture is introduced, which overcomes these limitations by employing perovskite nanocrystals (PNCs) of the composition FAPb 1− y Zn y I 3− x Br x as the dye sensitizer, coupled with a quasisolid‐state polymer gel electrolyte. This gel‐based electrolyte overcomes problems related to leakage and photochemical degradation while providing a medium for ionic conduction. The PNCs exhibit superior light‐harvesting and charge transport capabilities, replacing conventional synthetic and natural dyes. Such a combined approach yields enhanced device stability and photovoltaic performance, underscoring the synergistic benefits of perovskite sensitization and polymer gel electrolytes. This work presents a sustainable and scalable alternative to traditional DSSC configurations.