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Metal–organic framework nanosheets for enhanced performance of organic photovoltaic cells
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020/03/10 , DOI: 10.1039/c9ta12313j Kezia Sasitharan 1, 2, 3, 4 , David G. Bossanyi 2, 3, 4, 5 , Naoum Vaenas 2, 3, 4, 5 , Andrew J. Parnell 2, 3, 4, 5 , Jenny Clark 2, 3, 4, 5 , Ahmed Iraqi 1, 2, 3, 4 , David G. Lidzey 2, 3, 4, 5 , Jonathan A. Foster 1, 2, 3, 4
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2020/03/10 , DOI: 10.1039/c9ta12313j Kezia Sasitharan 1, 2, 3, 4 , David G. Bossanyi 2, 3, 4, 5 , Naoum Vaenas 2, 3, 4, 5 , Andrew J. Parnell 2, 3, 4, 5 , Jenny Clark 2, 3, 4, 5 , Ahmed Iraqi 1, 2, 3, 4 , David G. Lidzey 2, 3, 4, 5 , Jonathan A. Foster 1, 2, 3, 4
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Metal–organic framework nanosheets (MONs) are an emerging class of two-dimensional materials whose diverse and readily tunable structures make them ideal for use in optoelectronic applications. Here, liquid exfoliation is used to synthesize ultrathin zinc-porphyrin based MONs with electronic and optical properties ideally suited for incorporation into a polythiophene–fullerene (P3HT–PCBM) organic solar cell. Remarkably, the addition of MONs to the photoactive layer of a photovoltaic device results in a power conversion efficiency of 5.2%, almost twice that for reference devices without nanosheets with a simultaneous improvement of Jsc, Voc and FF. Our analysis indicates that the complimentary electronic, optical and structural properties of the MONs allows them to act as a surface to template the crystallization of P3HT leading to a doubling of the absorbance, a tenfold increase in hole mobility and reduced grain size. These results demonstrate the potential of MONs as a tunable class of two-dimensional materials for enhancing the performance of a broad range of organic solar cells and other electronic devices.
中文翻译：
金属-有机骨架纳米片可增强有机光伏电池的性能
金属有机框架纳米片（MONs）是一类新兴的二维材料，其多样且易于调整的结构使其非常适合用于光电应用。在这里，液体剥落法用于合成具有电子和光学特性的超薄锌卟啉基MONs，这些分子非常适合掺入聚噻吩-富勒烯（P3HT-PCBM）有机太阳能电池中。值得注意的是，在光伏器件的光敏层中添加MON导致的功率转换效率为5.2％，几乎是没有纳米片的参比器件的两倍，同时改善了J sc，V oc和FF。我们的分析表明，MONs的互补电子，光学和结构特性使它们可以作为表面模板化P3HT的结晶，从而导致吸光度加倍，空穴迁移率提高十倍和晶粒尺寸减小。这些结果证明了MONs作为二维可调谐类材料的潜力，可用于增强各种有机太阳能电池和其他电子设备的性能。
更新日期：2020-03-26
中文翻译：
金属-有机骨架纳米片可增强有机光伏电池的性能
金属有机框架纳米片（MONs）是一类新兴的二维材料，其多样且易于调整的结构使其非常适合用于光电应用。在这里，液体剥落法用于合成具有电子和光学特性的超薄锌卟啉基MONs，这些分子非常适合掺入聚噻吩-富勒烯（P3HT-PCBM）有机太阳能电池中。值得注意的是，在光伏器件的光敏层中添加MON导致的功率转换效率为5.2％，几乎是没有纳米片的参比器件的两倍，同时改善了J sc，V oc和FF。我们的分析表明，MONs的互补电子，光学和结构特性使它们可以作为表面模板化P3HT的结晶，从而导致吸光度加倍，空穴迁移率提高十倍和晶粒尺寸减小。这些结果证明了MONs作为二维可调谐类材料的潜力，可用于增强各种有机太阳能电池和其他电子设备的性能。
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