A strategy has been explored to enhance the diffusion of Co^2+/3+ species through the dye-stained nanoparticle spacer employed as an electrolyte absorbing layer with different nanoparticle sizes of TiO₂ (30 and 20 nm) and ZrO₂ (15 nm) films in transparent conducting oxide-less back-contact dye-sensitized solar cells (T-C-O-less B-C-DSCs). A dye-stained nanoparticle spacer with a relatively larger particle of the TiO₂ (30 nm) film brought about easy diffusion of cobalt(II/III) complexes leading to an enhanced photoconversion efficiency (PCE) of 6.55% as compared to relatively smaller nanoparticle of the TiO₂ (20 nm) film (4.95%) and ZrO₂ (15 nm) film (2.03%). The T-C-O-less B-C-DSC exhibits a lower PCE of 6.55% relative to the T-C-O-based DSC (9.10%) owing to relatively hampered diffusivity of [Co(bpy)₃]^3+/2+ complexes through perforated holes of the SS-mesh as well as the nanoparticle spacer. A differential study reveals that the cobalt electrolyte exhibits much improved light accumulation in the range 330–430 nm relative to the iodine electrolyte counterpart. The corrosion study of the SS-mesh and Ti-protected SS-mesh reveals that stable T-C-O-less B-C-DSCs can be attained only by the cobalt electrolyte because of its mild nature toward the SS-mesh and Ti metal as compared to the iodine electrolyte.

中文翻译：

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利用纳米级间隔物和钴配合物氧化还原梭，提高低成本，无TCO的染料敏化低成本太阳能电池的效率

已经探索出一种策略，以增强Co ^{2 + / 3 +}物种通过染料染色的纳米颗粒间隔物的扩散，该间隔物用作具有不同纳米尺寸的TiO ₂（30和20 nm）和ZrO ₂（15 nm）的电解质吸收层透明无导电背接触式染料敏化太阳能电池（无TCO的BC-DSC）中的薄膜。具有相对较大的TiO ₂（30 nm）膜颗粒的染料染色纳米颗粒间隔物使钴（II / III）配合物易于扩散，与相对较小的纳米颗粒相比，提高了6.55％的光转换效率（PCE） TiO ₂（20 nm）膜（4.95％）和ZrO _2的含量（15 nm）膜（2.03％）。相对于基于TCO的DSC（9.10％），无TCO的BC-DSC的PCE较低，为6.55％，这是由于[Co（bpy）₃ ] ^{3 + / 2 +}络合物通过SS多孔孔的相对扩散性受到阻碍-网孔以及纳米颗粒间隔物。一项差异研究表明，相对于碘电解液，钴电解液在330-430 nm范围内显示出改善的光累积。对SS筛网和Ti保护的SS筛网的腐蚀研究表明，仅钴电解液才能获得稳定的无TCO的BC-DSC，因为与碘相比，钴电解液对SS筛网和Ti金属的温和性质电解质。