Abstract Different weight percentages (0%, 10%, 20%, 30%, 40% and 50%) of 4,4′-bipyridine doped polyvinylidene fluoride/potassium iodide/iodine (PVDF/KI/I2) solid polymer electrolytes (SPEs) were prepared by solution casting technique using N,N-dimethylformamide (DMF) as solvent. The crystallinity, ionic conductivity, surface morphology and photovoltaic performance of 4,4′-bipyridine doped PVDF/KI/I2 SPEs were examined. The lowest crystallinity of 30% 4,4′-bipyridine doped PVDF/KI/I2 SPE was confirmed. The surface morphology of 30% 4,4′-bipyridine doped PVDF/KI/I2 SPE has the smallest spherical particles with voids. The 30% 4,4′-bipyridine doped PVDF/KI/I2 SPE exhibited the highest ionic conductivity value of 7.77 × 10−5 Scm−1. This is due to the lowest crystallinity and highest ionic mobility of the electrolyte. The dye-sensitized solar cells (DSSCs) were fabricated using 4,4′-bipyridine doped PVDF/KI/I2 SPEs, among them 30% 4,4′-bipyridine doped PVDF/KI/I2 SPE used DSSC exhibited the highest power conversion efficiency (PCE) of 3.6% under an illumination of 100 mW/cm2.

中文翻译：

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4,4'-联吡啶掺杂的聚偏二氟乙烯/碘化钾/碘固体聚合物电解质对染料敏化太阳能电池应用的影响

摘要 不同重量百分比（0%、10%、20%、30%、40% 和 50%）的 4,4'-联吡啶掺杂聚偏二氟乙烯/碘化钾/碘 (PVDF/KI/I2) 固体聚合物电解质 (SPEs) ) 是通过溶液浇铸技术制备的，使用 N,N-二甲基甲酰胺 (DMF) 作为溶剂。研究了 4,4'-联吡啶掺杂的 PVDF/KI/I2 SPE 的结晶度、离子电导率、表面形貌和光伏性能。确认了 30% 4,4'-联吡啶掺杂的 PVDF/KI/I2 SPE 的最低结晶度。30% 4,4'-联吡啶掺杂的 PVDF/KI/I2 SPE 的表面形态具有最小的带空隙的球形颗粒。30% 4,4'-联吡啶掺杂的 PVDF/KI/I2 SPE 表现出最高的离子电导率值为 7.77 × 10-5 Scm-1。这是由于电解质的最低结晶度和最高离子迁移率。