用于过氧化物太阳能电池的吩噻嗪和乙烯二氧噻吩交替共聚物:柔性和刚性取代基交替的影响

IF 7.6 1区 化学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Bing Zhang, Yaohang Cai, Lifei He, Niansheng Xu, Yi Yuan, Jing Zhang, Yuyan Zhang and Peng Wang
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引用次数: 0

摘要

开发具有优异电气性能、耐热性和成本效益的 p 型聚合物半导体对于推动 ni-p 型过氧化物太阳能电池的实际应用至关重要。在这里,我们采用直接芳基化缩聚法合成了一种吩噻嗪和 3,4- 乙撑二氧噻吩的交替共聚物,具有很高的玻璃化转变温度(175 °C)。除了主链中共轭单元的交替外,这种共聚物还在吩噻嗪分子的氮位置上交替出现柔性(2-辛基十二烷基)和刚性(三甲基苯基)取代基。与仅含有柔性或刚性取代基的参考聚合物相比,交替使用这些分子可产生形态更平滑、空穴迁移率更高的聚合物半导体复合薄膜。通过采用这种具有独特取代基分布和创新主链结构的聚合物作为空穴传输材料,我们制造出了平均效率高达 25.1%的过氧化物太阳能电池。这些电池在 85 ℃ 蓄热和 45 ℃ 工作条件下也表现出卓越的稳定性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

An alternating copolymer of phenothiazine and ethylenedioxythiophene for perovskite solar cells: effects of flexible and rigid substituent alternation†

An alternating copolymer of phenothiazine and ethylenedioxythiophene for perovskite solar cells: effects of flexible and rigid substituent alternation†

Developing p-type polymeric semiconductors with exceptional electrical performance, heat tolerance, and cost-effectiveness is pivotal for advancing the practical application of n-i-p perovskite solar cells. Here, we employed direct arylation polycondensation to synthesize an alternating copolymer of phenothiazine and 3,4-ethylenedioxythiophene, featuring a high glass transition temperature (175 °C). In addition to the alternation of conjugated units within the main chain, the copolymer features alternating flexible (2-octyldodecyl) and rigid (trimethylphenyl) substituents at the nitrogen positions of the phenothiazine moiety. Compared to reference polymers with solely flexible or rigid substituents, the alternating use of these moieties resulted in the polymeric semiconductor composite film with smoother morphology and enhanced hole mobility. By employing this polymer with a distinct distribution of substituents and an innovative main chain structure as a hole transport material, we fabricated perovskite solar cells achieving an average efficiency of 25.1%. These cells also exhibited excellent stabilities under conditions of 85 °C thermal storage and 45 °C operation.

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来源期刊
Chemical Science
Chemical Science CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
14.40
自引率
4.80%
发文量
1352
审稿时长
2.1 months
期刊介绍: Chemical Science is a journal that encompasses various disciplines within the chemical sciences. Its scope includes publishing ground-breaking research with significant implications for its respective field, as well as appealing to a wider audience in related areas. To be considered for publication, articles must showcase innovative and original advances in their field of study and be presented in a manner that is understandable to scientists from diverse backgrounds. However, the journal generally does not publish highly specialized research.
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