ABSTRACT

The nanocomposite polymer electrolyte [x (85 PVA: 10 PPy: 5 KI: I₂:15 EC: 15MPII: 10 TiO₂) for x = 5, 10, 15 Gy γ-ray irradiation] is prepared using the solution casting technique. Exposure of γ-ray irradiation enhanced the amorphous nature of the polymer electrolyte, is confirmed by XRD. The 15Gy γ-ray-irradiated nanocomposite polymer electrolyte has higher electrical conductivity and minimum activation energy (0.664 kJ mol⁻¹). The EIS measurement reveals that the 15Gy γ-ray-irradiated nanocomposite polymer electrolyte incorporated DSSC shows lower R_ct1 and R_ct2 values at the counter electrode/electrolyte and photoanode/electrolyte interface, respectively. An outstanding performance is observed in the fabricated DSSCs using 15 Gy γ-ray-irradiated nanocomposite polymer electrolyte with a short circuit current density of 12.602 mA cm⁻², an open-circuit voltage of 0.711 V, a fill factor of 0.535, and a photovoltaic conversion efficiency of 4.79% under the light intensity of 100 mW cm⁻².

摘要

使用溶液浇铸技术制备纳米复合聚合物电解质 [x (85 PVA: 10 PPy: 5 KI: I ₂ :15 EC: 15MPII: 10 TiO ₂ )，x  = 5, 10, 15 Gy γ 射线辐射]。XRD 证实了 γ 射线照射增强了聚合物电解质的无定形性质。经 15Gy γ 射线照射的纳米复合聚合物电解质具有更高的电导率和最小的活化能（0.664 kJ mol ^-1）。EIS 测量表明，15Gy γ 射线辐照纳米复合聚合物电解质并入 DSSC 显示较低的R _{ct 1}和R _{ct 2}分别在对电极/电解质和光阳极/电解质界面处的值。在使用 15 Gy γ 射线辐照的纳米复合聚合物电解质制造的 DSSC 中观察到出色的性能，短路电流密度为 12.602 mA cm ^-2，开路电压为 0.711 V，填充因子为 0.535，以及在100 mW cm ^-2光强下光伏转换效率为4.79% 。