Current research shows dye-sensitized solar cell (DSSC) photovoltaic conversion efficiency (PCE) can be increased when dye absorption on double layers of titanium dioxide (TiO2) are modified using magnetic beads (MBs) and reduced graphene oxide (rGO). The effects of incorporating both MBs and rGO into a TiO2 DSSC photoanode are investigated here in detail using a solar simulator, electrochemical impedance spectroscopy, X-ray diffraction, UV–visible spectroscopy and Raman spectroscopy. This study compared to an unmodified TiO2 PCE 4.06% and a modified photoanode PCE (η) 5.45%. Nyquist plots showed that incorporation of MBs and rGO decreased electron transfer impedance and increased the charge transfer rate. Increased dye-loading could be detected through UV–visible absorption enhancement of 26% for the addition of rGO. Incorporation of MBs and rGO can produce higher photovoltaic conversion efficiency.

中文翻译：

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使用基于磁珠和还原氧化石墨烯的增强双层提高 DSSC 性能

目前的研究表明，当使用磁珠 (MB) 和还原氧化石墨烯 (rGO) 对双层二氧化钛 (TiO2) 上的染料吸收进行改性时，可以提高染料敏化太阳能电池 (DSSC) 光伏转换效率 (PCE)。本文使用太阳模拟器、电化学阻抗谱、X 射线衍射、紫外-可见光谱和拉曼光谱详细研究了将 MB 和 rGO 结合到 TiO2 DSSC 光阳极中的影响。该研究与未改性的 TiO2 PCE 4.06% 和改性光阳极 PCE (η) 5.45% 进行了比较。Nyquist 图显示 MBs 和 rGO 的结合降低了电子转移阻抗并提高了电荷转移率。添加 rGO 后，可以通过 26% 的紫外-可见光吸收增强来检测染料负载量的增加。