Here, we report the usage of two-dimensional MXene, Mo_1.33C-assisted poly(3,4-ethylene dioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) as an efficient hole transport layer (HTL) to construct high-efficiency polymer solar cells. The composite HTLs are prepared by mixing Mo_1.33C and PEDOT:PSS aqueous solution. The conventional devices based on Mo_1.33C:PEDOT:PSS exhibit an average power conversion efficiency (PCE) of 9.2%, which shows a 13% enhancement compared to the reference devices. According to the results from hole mobilities, charge extraction probabilities, steady-state photoluminescence, and atomic force microscopy, the enhanced PCE can be ascribed to the improved charge transport and extraction properties of the HTL, along with the morphological improvement of the active layer on top. This work clearly demonstrates the feasibility to combine advantages of Mo_1.33C MXene and PEDOT:PSS as the promising HTL in organic photovoltaics.

中文翻译：

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Mo _1.33 C MXene辅助的PEDOT：PSS空穴传输层，用于高性能本体-异质结聚合物太阳能电池

在这里，我们报告使用二维MXene，Mo _1.33 C辅助的聚（3,4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）作为有效的空穴传输层（HTL）来构建高效的聚合物太阳能电池。通过将Mo _1.33 C和PEDOT：PSS水溶液混合来制备复合HTL 。基于Mo _1.33的常规设备C：PEDOT：PSS的平均功率转换效率（PCE）为9.2％，与参考设备相比，提高了13％。根据空穴迁移率，电荷提取概率，稳态光致发光和原子力显微镜的结果，增强的PCE可以归因于HTL的改进的电荷传输和提取特性，以及有源层在表面上的形态学改进。最佳。这项工作清楚地证明了将_1.33 C MXene和PEDOT：PSS的优点相结合作为有机光伏中有希望的HTL的可行性。