In this work, we introduce the synthesis of PtSe alloys with the different stoichiometric ratio of Pt and Se in PtSe alloy on reduced graphene oxide (RGO). And, then the developed nanohybrid materials are employed for the first time as counter electrodes (CEs) for efficient third-generation solar cells. As a result, PtSe nanoalloys is located on the surface of RGO without any agglomerations. Furthermore, the developed materials also provide a porous three-dimensional network structure, suggesting rapid electron transfer paths. Therefore, the highest efficiency of 6.26% was obtained for a cell fabricated with Pt_0·74Se_0.26/RGO electrode that is due to the lowest charge-transfer resistance of 0.89 Ω and diffusion impedance of 0.88 Ω. The optimized efficiency is also higher than those of 4.98% and 4.34% for devices assembled with Pt/RGO and Se/RGO CEs, respectively. This work presents a general strategy for designing and fabricating porous PtSe alloy/RGO CEs for energy conversion devices.

在这项工作中，我们介绍了在还原的氧化石墨烯（RGO）上合成具有不同化学计量比的Pt和Se的PtSe合金。并且，然后将开发的纳米混合材料首次用作有效的第三代太阳能电池的对电极（CE）。结果，PtSe纳米合金位于RGO的表面，没有任何团聚。此外，开发的材料还提供了多孔的三维网络结构，表明了快速的电子传输路径。因此，用Pt _0·74 Se _0.26制造的电池获得了6.26％的最高效率。/ RGO电极，这是因为最低的电荷转移电阻为0.89Ω，扩散阻抗为0.88Ω。优化效率也分别高于使用Pt / RGO CE和Se / RGO CE组装的设备的4.98％和4.34％。这项工作提出了设计和制造用于能量转换装置的多孔PtSe合金/ RGO CE的一般策略。