Highly Efficient Tandem Organic Solar Cell Enabled by Environmentally Friendly Solvent Processed Polymeric Interconnecting Layer,Advanced Energy Materials

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Highly Efficient Tandem Organic Solar Cell Enabled by Environmentally Friendly Solvent Processed Polymeric Interconnecting Layer
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2018-02-12 , DOI: 10.1002/aenm.201703180
Kai Zhang ₁ , Baobing Fan ₁ , Ruoxi Xia ₁ , Xiang Liu ₁ , Zhicheng Hu ₁ , Honggang Gu ₂ , Shiyuan Liu ₂ , Hin-Lap Yip ₁ , Lei Ying ₁ , Fei Huang ₁ , Yong Cao ₁

Affiliation

In the field of organic solar cells (OSCs), tandem structure devices exhibit very attractive advantages for improving power conversion efficiency (PCE). In addition to the well researched novel pair of active layers in different subcells, the construction of interconnecting layer (ICL) also plays a critical role in achieving high performance tandem devices. In this work, a new way of achieving environmentally friendly solvent processed polymeric ICL by adopting poly[(9,9‐bis(3′‐(N,N‐dimethylamino)propyl)‐2,7‐fluorene)‐alt‐5,5′‐bis(2,2′‐thiophene)‐2,6‐naphthalene‐1,4,5,8‐tetracaboxylic‐N,N′‐di(2‐ethylhexyl)imide] (PNDIT‐F3N) blended with poly(ethyleneimine) (PEI) as the electron transport layer (ETL) and PEDOT:PSS as the hole transport layer is reported. It is found that the modification ability of PNDIT‐F3N on PEDOT can be linearly tuned by the incorporation of PEI, which offers the opportunity to study the charge recombination behavior in ICL. At last, tandem OSC with highest PCE of 12.6% is achieved, which is one of the best tandem OSCs reported till now. These results offer a new selection for constructing efficient ICL in high performance tandem OSCs and guide the way of design new ETL materials for ICL construction, and may even be integrated in future printed flexible large area module device fabrication with the advantages of environmentally friendly solvent processing and thickness insensitivity.

中文翻译：

环保型溶剂加工的聚合物互连层可实现高效的串联有机太阳能电池

在有机太阳能电池（OSC）领域，串联结构器件在提高功率转换效率（PCE）方面显示出非常诱人的优势。除了在不同子电池中经过深入研究的新型有源层对之外，互连层（ICL）的构造在实现高性能串联器件方面也起着关键作用。在这项工作中，采用聚[（9,9-双（3'-（N，N-二甲基氨基）丙基）-2,7-芴）-alt-5， 5′-双（2,2′-噻吩）-2,6-萘-1,4,5,8-四羧酸N，N据报道，与聚（亚乙基亚胺）（PEI）作为电子传输层（ETL）和PEDOT：PSS作为空穴传输层混合的'-二（2-乙基己基）酰亚胺]（PNDIT-F3N）。发现通过掺入PEI可以线性调节PNDIT-F3N在PEDOT上的修饰能力，这为研究ICL中的电荷重组行为提供了机会。最终，实现了PCE最高为12.6％的串联OSC，这是迄今为止报道的最好的串联OSC之一。这些结果为在高性能串联OSC中构建有效的ICL提供了新的选择，并指导了设计用于ICL构建的新ETL材料的方法，甚至可以结合未来的印刷柔性大面积模块器件制造，并具有环保溶剂处理的优势。和厚度不敏感。

更新日期：2018-02-12

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