Rapid decay of photoanode, leakage from sealant, and evaporation of electrolyte are always the major concerns of quantum dot-sensitized solar cells (QDSCs) based on liquid electrolyte. Subsequently, gel polymer electrolyte (GPE) appears as an attractive solution in addition to lower cost, lighter weight, and flexibility. Poly(acrylamide-co-acrylic acid) (PAAm-PAA) is of special interest to act as a polymer host to entrap liquid electrolyte because it provides high transparency, good gelatinizing properties, and excellent compatibility with the liquid electrolyte. In this work, the electrical and transport properties of PAAm-PAA GPE incorporating with water-soluble sodium sulfide were characterized by impedance spectroscopy. An increment of ionic conductivity was observed with the incorporation of ethylene carbonate (EC) and potassium chloride (KCl). The highest room temperature ionic conductivity of PAAm-PAA GPE is 70.82 mS·cm−1. QDSC based on PAAm-PAA GPE with the composition of 1.3 wt% of KCl, 0.9 wt% of EC, 55.3 wt% of PAAm-PAA, 38.5 wt% of sodium sulfide, and 4.0 wt% of sulfur can present up to 1.80% of light-to-electricity conversion efficiency.

中文翻译：

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含有水溶性硫化钠盐的聚（丙烯酰胺-共聚-丙烯酸）凝胶聚合物电解质用于准固态量子点敏化太阳能电池

光阳极的快速衰减、密封剂泄漏和电解质蒸发一直是基于液体电解质的量子点敏化太阳能电池 (QDSC) 的主要问题。随后，除了成本更低、重量更轻和柔韧性好之外，凝胶聚合物电解质 (GPE) 作为一种有吸引力的解决方案出现。聚（丙烯酰胺-共聚-丙烯酸）（PAAm-PAA）作为聚合物主体来截留液体电解质特别令人感兴趣，因为它具有高透明度、良好​​的胶凝性能以及与液体电解质的优异相容性。在这项工作中，加入水溶性硫化钠的 PAAm-PAA GPE 的电学和输运性质通过阻抗谱表征。随着碳酸亚乙酯 (EC) 和氯化钾 (KCl) 的加入，观察到离子电导率增加。PAAm-PAA GPE的最高室温离子电导率为70.82 mS·cm-1。基于 PAAm-PAA GPE 的 QDSC，其组成为 1.3 wt% KCl、0.9 wt% EC、55.3 wt% PAAm-PAA、38.5 wt% 硫化钠和 4.0 wt% 硫，可呈现高达 1.80%光电转换效率。