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A Highly Efficient Non‐Fullerene Organic Solar Cell with a Fill Factor over 0.80 Enabled by a Fine‐Tuned Hole‐Transporting Layer
Advanced Materials ( IF 27.4 ) Pub Date : 2018-07-10 , DOI: 10.1002/adma.201801801 Zhong Zheng 1 , Qin Hu 2 , Shaoqing Zhang 3 , Dongyang Zhang 4 , Jianqiu Wang 4 , Shenkun Xie 4 , Rong Wang 4 , Yunpeng Qin 3 , Wanning Li 3 , Ling Hong 3 , Ningning Liang 3 , Feng Liu 2 , Yuan Zhang 4 , Zhixiang Wei 1 , Zhiyong Tang 1 , Thomas P Russell 2 , Jianhui Hou 3 , Huiqiong Zhou 1
Advanced Materials ( IF 27.4 ) Pub Date : 2018-07-10 , DOI: 10.1002/adma.201801801 Zhong Zheng 1 , Qin Hu 2 , Shaoqing Zhang 3 , Dongyang Zhang 4 , Jianqiu Wang 4 , Shenkun Xie 4 , Rong Wang 4 , Yunpeng Qin 3 , Wanning Li 3 , Ling Hong 3 , Ningning Liang 3 , Feng Liu 2 , Yuan Zhang 4 , Zhixiang Wei 1 , Zhiyong Tang 1 , Thomas P Russell 2 , Jianhui Hou 3 , Huiqiong Zhou 1
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With rapid development for tens of years, organic solar cells (OSCs) have attracted much attention for their potential in practical applications. As an important photovoltaic parameter, the fill factor (FF) of OSCs stands for the effectiveness of charge generation and collection, which significantly depends on the properties of the interlayer and active layer. Here, a facile and effective strategy to improve the FF through hole‐transporting layer (HTL) modification is demonstrated. By mixing WOx nanoparticles with a poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) emulsion, the surface free energy of the HTL is improved and the morphology of the active layer is optimized. Benefiting from increased carrier lifetime, a device based on WOx:PEDOT:PSS HTL exhibits a boosted performance with an FF of 80.79% and power conversion efficiency of 14.57% PCE. The results are certified by the National Institute of Metrology (NIM), which, to date, are the highest values in this field with certification. This work offers a simple and viable option of HTL modification to realize highly efficient OSCs.
中文翻译：
通过微调空穴传输层实现填充因子超过 0.80 的高效非富勒烯有机太阳能电池
经过数十年的快速发展，有机太阳能电池（OSC）因其在实际应用中的潜力而备受关注。作为重要的光伏参数，OSC的填充因子（FF）代表电荷产生和收集的有效性，这在很大程度上取决于中间层和有源层的性能。在这里，展示了一种通过空穴传输层（HTL）修饰来改善 FF 的简便有效的策略。通过将WO x纳米颗粒与聚(3,4-乙撑二氧噻吩):聚苯乙烯磺酸(PEDOT:PSS)乳液混合，HTL的表面自由能得到改善，活性层的形貌得到优化。得益于载流子寿命的延长，基于 WO x :PEDOT:PSS HTL 的器件表现出更高的性能，FF 为 80.79%，功率转换效率为 14.57% PCE。该结果经国家计量研究院（NIM）认证，是迄今为止该领域获得认证的最高值。这项工作提供了一种简单可行的 HTL 修改选项，以实现高效 OSC。
更新日期：2018-07-10
中文翻译：
通过微调空穴传输层实现填充因子超过 0.80 的高效非富勒烯有机太阳能电池
经过数十年的快速发展，有机太阳能电池（OSC）因其在实际应用中的潜力而备受关注。作为重要的光伏参数，OSC的填充因子（FF）代表电荷产生和收集的有效性，这在很大程度上取决于中间层和有源层的性能。在这里，展示了一种通过空穴传输层（HTL）修饰来改善 FF 的简便有效的策略。通过将WO x纳米颗粒与聚(3,4-乙撑二氧噻吩):聚苯乙烯磺酸(PEDOT:PSS)乳液混合，HTL的表面自由能得到改善，活性层的形貌得到优化。得益于载流子寿命的延长，基于 WO x :PEDOT:PSS HTL 的器件表现出更高的性能，FF 为 80.79%，功率转换效率为 14.57% PCE。该结果经国家计量研究院（NIM）认证，是迄今为止该领域获得认证的最高值。这项工作提供了一种简单可行的 HTL 修改选项，以实现高效 OSC。
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