In this study, photoanodes of a dye-sensitized solar cell (DSSC) were made by adding various weight percentages (0∼9 wt%) of MgO nanopowder to ZnO nanopowder with a different wet powder mixing and grinding method. For the MgO/ZnO DSSCs, the addition of 1 wt% MgO can achieve maximum short-circuit current density (4.00 mA/cm²) and maximum photovoltaic conversion efficiency (1.03%), which was 39% and 27% better than those of the reference ZnO DSSCs, respectively. When a small amount of MgO was added, the electron transport rate or the efficiency of electron injection into photoanodes was improved. However, when a large amount of MgO was added, the number of carriers generated by light was lowered, which led to performance degradation in DSSCs. Preparing photoanodes by adding a small amount of MgO to ZnO can thus effectively improve the photovoltaic performance of ZnO DSSCs.

在这项研究中，染料敏化太阳能电池 (DSSC) 的光阳极是通过将不同重量百分比 (0~9 wt%) 的 MgO 纳米粉末添加到 ZnO 纳米粉末中，采用不同的湿粉混合和研磨方法制成的。对于 MgO/ZnO DSSCs，添加 1 wt% MgO 可以获得最大短路电流密度（4.00 mA/cm ²) 和最大光伏转换效率 (1.03%)，分别比参考 ZnO DSSC 高 39% 和 27%。当添加少量 MgO 时，电子传输速率或电子注入光阳极的效率得到提高。然而，当添加大量 MgO 时，光产生的载流子数量减少，导致 DSSC 的性能下降。通过在 ZnO 中加入少量 MgO 制备光阳极可以有效提高 ZnO DSSCs 的光伏性能。