Interlayers for non-fullerene based polymer solar cells: distinctive features and challenges,Energy & Environmental Science

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Interlayers for non-fullerene based polymer solar cells: distinctive features and challenges
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2020-12-10 , DOI: 10.1039/d0ee02503h
Roberto Sorrentino _{1,

2,

3,

4} , Erika Kozma _{1,

2,

3,

4} , Silvia Luzzati _{1,

2,

3,

4} , Riccardo Po _{4,

5,

6,

7,

8}

Affiliation

Polymer solar cells based on fullerene acceptors have reached in recent years power conversion efficiencies (PCEs) approaching 13%. The advent of non-fullerene acceptors (NFAs) with the advantages of synthetic versatility, a strong absorption ability and high thermal stability has resulted in impressive PCEs of over 18% in single junction devices. The insertion of interlayers between the active components and electrodes plays a key role in charge collection, boosts the efficiency and improves the device stability. However, the mechanisms regulating the interaction between interlayer materials and active layers based on NFAs are not yet completely rationalized. This review article summarizes organic, inorganic and hybrid materials used as anode and cathode interlayers in conventional and inverted fullerene-free solar cells. Particular attention is paid to the distinctive features of the interlayers when used in non-fullerene solar cells. We will also comment on the fabrication processes with an emphasis on the transition from small area, lab devices to large area modules and on possible mechanisms which are behind.

中文翻译：

非富勒烯基聚合物太阳能电池的中间层：独特的特征和挑战

近年来，基于富勒烯受体的聚合物太阳能电池的功率转换效率（PCE）接近13％。非富勒烯受体（NFA）的出现具有合成多功能性，强吸收能力和高热稳定性的优点，在单结器件中产生了令人印象深刻的PCE超过18％。在活性成分和电极之间插入中间层在电荷收集中起着关键作用，可提高效率并改善器件稳定性。但是，基于NFA调节层间材料与活性层之间相互作用的机制尚未完全合理化。这篇综述文章总结了有机，无机和杂化材料，这些材料在常规的和倒置的无富勒烯太阳能电池中用作阳极和阴极中间层。当用于非富勒烯太阳能电池时，应特别注意中间层的独特特征。我们还将评论制造过程，重点是从小面积，实验室设备到大面积模块的过渡以及背后的可能机制。

更新日期：2020-12-10

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