In order to enhance the performance of the dye-sensitized solar cells (DSSCs), graphene oxide (GO) was introduced into the TiO₂ photoanode to construct a GO-TiO₂ composited photoanode. The photoelectric properties of the as-constructed photoanode were studied in comparison with those of the TiO₂ photoanode and the effect of GO obtained by different methods on the performance of the GO-TiO₂ composited photoanode was also compared. After constructed with GO, the photoanode displayed enhanced light and dye adsorption properties with a higher light harvesting efficiency, lower internal resistances, a faster electron transport, and a lower charge recombination rate, which resulted in a higher current density. At the optimal condition, the DSSCs based on the photoanode modified by GO obtained in our laboratory (GO1) exhibited a J_sc of 18.16 mA cm⁻², a V_oc of 0.68 V, and a FF of 0.59 with a energy conversion efficiency (η) of 7.30%, indicating an increased performance compared with that of the DSSCs based only on the pure TiO₂ photoanode, which had a J_sc of 14.41 mA cm⁻², a V_oc of 0.66 V, and a FF of 0.60 with a η value of 5.67%. However, when GO that obtained from a production line in a factory (GO2) was used, the performance of the DSSCs was further improved, which showed a J_sc of 19.49 mA cm⁻², a V_oc of 0.68 V, and an FF of 0.59 with a η value of 7.83%. Different performances between GOs that obtained from the laboratory and the factory were mainly attributed to their distinct production processes, which distinguished their properties from each other. It is a potential method to enhance the performance of the DSSCs by constructing a GO-TiO₂ photoanode with a suitable quality GO.

中文翻译：

---

通过将氧化石墨烯引入TiO _2光阳极来增强染料敏化太阳能电池的性能

为了提高染料敏化太阳能电池（DSSC）的性能，将氧化石墨烯（GO）引入TiO ₂光电阳极以构建GO-TiO ₂复合光电阳极。与TiO ₂光电阳极相比，研究了原态光电阳极的光电性能，以及不同方法获得的GO对GO-TiO ₂性能的影响。还比较了复合光阳极。用GO构造后，光电阳极显示出增强的光和染料吸附性能，具有更高的光收集效率，更低的内电阻，更快的电子传输和更低的电荷复合率，从而导致更高的电流密度。在最佳条件下，基于我们实验室（GO1）获得的GO修饰的光阳极的DSSC的J _sc为18.16 mA cm ^-2，V _oc为0.68 V，FF为0.59，具有能量转换效率（η）的7.30％，表明与仅基于纯的TiO的DSSC中的相比，提高的性能₂光电阳极，其中有一个Ĵ_sc为14.41 mA cm ^-2， V _oc为0.66 V，FF为0.60， η值为5.67％。但是，当使用从工厂的生产线（GO2）获得的GO时，DSSC的性能进一步提高，显示出J _sc为19.49 mA cm ^-2， V _oc为0.68 V，FF 0.59， η值为7.83％。从实验室和工厂获得的GO之间的不同性能主要归因于它们不同的生产过程，这使它们的特性彼此不同。通过构建GO-TiO来增强DSSC的性能是一种潜在的方法。_2个具有合适质量GO的光电阳极。