Combination of noncovalent conformational locks and side chain engineering to tune the crystallinity of nonfullerene acceptors for high-performance P3HT based organic solar cells†,Materials Chemistry Frontiers

当前位置： X-MOL 学术 › Mater. Chem. Front. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Combination of noncovalent conformational locks and side chain engineering to tune the crystallinity of nonfullerene acceptors for high-performance P3HT based organic solar cells†
Materials Chemistry Frontiers ( IF 6.0 ) Pub Date : 2018-10-15 00:00:00 , DOI: 10.1039/c8qm00461g
Pan Ye _{1,

2,

3} , Yusheng Chen _{1,

2,

3} , Jianfei Wu _{1,

2,

2,

3,

4} , Xiaoxi Wu _{1,

2,

3} , Yunxiao Xu _{1,

2,

3,

5,

6} , Zijie Li _{1,

2,

3} , Shikai Hong _{1,

2,

3} , Ming Sun _{3,

6,

7} , Aidong Peng _{1,

2,

3} , Hui Huang _{1,

2,

3}

Affiliation

P3HT-based organic solar cells (OSCs) have great advantages for commercialization including straightforward and scalable synthesis and well-developed roll-to-roll manufacturing technology. However, it is difficult to control the morphology of P3HT:acceptor blend films due to their highly crystalline characteristics. In this work, we designed and synthesized two thiazole (Tz) containing small molecular acceptors with an A–π–D–π–A type structure for the P3HT donor material. Both small molecules exhibit a good planar configuration due to incorporation of S⋯N noncovalent conformational locks. Upon changing the side chains, the interchain π–π stacking and the crystallinity of the small molecules were fine-tuned. Interestingly, P-IDTzR with bulky side chains exhibits suitable crystallinity, which matches well with P3HT. As a result, the P3HT:P-IDTzR blend films demonstrate optimal morphology, leading to a larger short circuit current (J_SC), an enhanced fill factor (FF), and thus a larger power conversion efficiency (5.01%). This contribution provides important guidance in designing nonfullerene acceptors for high-performance P3HT based OSCs.

中文翻译：

非共价构象锁和侧链工程相结合，可调节基于P3HT的高性能有机太阳能电池的非富勒烯受体的结晶度†

基于P3HT的有机太阳能电池（OSC）在商业化方面具有巨大优势，包括简单，可扩展的合成以及成熟的卷对卷制造技术。但是，由于P3HT：受体共混物膜的高度结晶特性，因此难以控制其形态。在这项工作中，我们为P3HT供体材料设计并合成了两个噻唑（Tz），它们包含具有A–π–D–π–A型结构的小分子受体。由于掺入了S⋯N非共价构象锁，两个小分子均表现出良好的平面构型。改变侧链后，微链的π-π堆积和小分子的结晶度得到了微调。有趣的是，具有庞大侧链的P-IDTzR表现出合适的结晶度，与P3HT很好地匹配。结果，P3HT：J _SC），增强的填充因子（FF）以及更大的功率转换效率（5.01％）。该贡献为设计基于高性能P3HT的OSC的非富勒烯受体提供了重要的指导。

更新日期：2018-10-15

点击分享查看原文

点击收藏

阅读更多本刊最新论文