Abstract. Grätzel solar cells are reported in a transparent conducting oxide-less (TCO-less) back-contact dye-sensitized solar cell (BC-DSC) architecture using a stainless steel mesh-protected working electrode along with nanoporous TiO2 semiconductor and metal-free D205 dye. Liquid electrolytes play a significant role for the dye regeneration in the working operation of TCO-less BC-DSCs; therefore, we report the effectiveness of two different commonly utilized electrolytes (iodine- and cobalt-based redox shuttles) for the construction and performance of TCO-less dye-sensitized solar cells (DSCs). Differential performance of DSCs thus fabricated was interpreted utilizing impedance spectral and lifetime analysis. It was found that although utilization of cobalt bipyridyl complex-based electrolyte was able to harvest higher photons in the lower wavelength region (330 to 430 nm) as compared to its iodine electrolyte counterparts, hampered dye regeneration due to reduced driving force and slower ion diffusion in combination with higher charge transport resistance at TiO2 / dye / electrolyte was responsible for relatively hampered photovoltaic performance at peak absorption.

中文翻译：

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电解质对背接触透明导电无氧化物染料敏化太阳能电池的影响：碘与钴

摘要。据报道，Grätzel 太阳能电池采用透明导电无氧化物 (TCO-less) 背接触染料敏化太阳能电池 (BC-DSC) 架构，使用不锈钢网保护工作电极以及纳米多孔 TiO2 半导体和无金属 D205染料。液体电解质在无 TCO BC-DSC 的工作操作中对染料再生起着重要作用；因此，我们报告了两种不同的常用电解质（碘基和钴基氧化还原穿梭）在无 TCO 染料敏化太阳能电池 (DSC) 的构造和性能方面的有效性。使用阻抗谱和寿命分析来解释由此制造的 DSC 的不同性能。