We examined the optimized conditions for preparing Pt/FTO glass counter electrodes (CEs) for the fabrication of highly efficient, bifacial, and quasi-solid-state dye-sensitized solar cells (QSS-DSSCs). The Pt/FTO glass CEs were prepared via thermal decomposition, and the molar concentration of the employed Pt precursor solution was controlled in the range of 5–40 mM. Impedance analysis and Tafel polarization curves revealed that electrocatalytic activity was optimized at 20 mM, whereas specular transmittance gradually decreased with increasing concentration of the precursor solution. When the CEs were applied to bifacial QSS-DSSCs employing a polymer gel electrolyte, the power conversion efficiency (PCE) was maximized at 20 mM under front illumination because the condition resulted in the highest electrocatalytic activity. Meanwhile, PCE under back illumination was optimized at 10 mM because of the larger incident light loss by the CEs at higher concentrations. Because the influence of the inferior performance under back illumination was more dominant in bifacial operations, the average PCE under front and back illumination was optimized at 10 mM.

我们研究了制备 Pt/FTO 玻璃对电极 (CE) 的优化条件，用于制造高效、双面和准固态染料敏化太阳能电池 (QSS-DSSC)。通过热分解制备 Pt/FTO 玻璃 CE，所用 Pt 前驱体溶液的摩尔浓度控制在 5-40 mM 范围内。阻抗分析和 Tafel 极化曲线表明，电催化活性在 20 mM 时得到优化，而镜面透射率随着前体溶液浓度的增加而逐渐降低。当 CE 应用于采用聚合物凝胶电解质的双面 QSS-DSSC 时，由于该条件导致最高的电催化活性，因此在正面照明下功率转换效率 (PCE) 在 20 mM 时最大化。同时，背照下的 PCE 在 10 mM 时进行了优化，因为 CE 在较高浓度下的入射光损失较大。由于背面照明下性能较差的影响在双面操作中更为显着，因此正面和背面照明下的平均 PCE 优化为 10 mM。