Abstract For boosting the power conversion efficiency (PCE) of quantum dot sensitized solar cells (QDSSCs), metal oxide (CoO) has been prepared via a facile mean and applied for CE materials in CdS/CdSe/ZnS QDSSCs. The electrochemical properties of the CoO counter electrode (CE) and photovoltaic performances of QDSSCs are investigated in detail. Under analogous sunlight illumination, compared with traditional Cu2S CE, the QDSSCs fabricated with CoO CE showed an obvious enhancement in cell properties and increased the power conversion efficiency (PCE) by 32.7%. A PCE of 6.02% was achieved by the QDSSCs with CoO CEs, which deliver a short circuit current density (Jsc) of 20.42 mA/cm2, open circuit voltage (Voc) of 0.655 V and fill factor (FF) of 0.45. Research so far has shown that metal oxide (e.g. CoO) has many excellent properties, such as good electrical conductivity, outstanding catalytic activity, relatively small charge transfer resistance, large surface area and cost-effective, so it is very promising to be a CE material for QDSSCs.

中文翻译：

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CoO纳米棒作为量子点敏化太阳能电池高效对电极的首次应用

摘要 为了提高量子点敏化太阳能电池 (QDSSCs) 的功率转换效率 (PCE)，通过简便的方法制备了金属氧化物 (CoO)，并将其应用于 CdS/CdSe/ZnS QDSSCs 中的 CE 材料。详细研究了 CoO 对电极 (CE) 的电化学性能和 QDSSCs 的光伏性能。在类似的阳光照射下，与传统的 Cu2S CE 相比，CoO CE 制备的 QDSSCs 显示出明显的电池性能增强，并将功率转换效率 (PCE) 提高了 32.7%。带有 CoO CE 的 QDSSC 实现了 6.02% 的 PCE，其短路电流密度 (Jsc) 为 20.42 mA/cm2，开路电压 (Voc) 为 0.655 V，填充因子 (FF) 为 0.45。迄今为止的研究表明，金属氧化物（例如 CoO）具有许多优异的性能，