New pyrazine-based π-conjugated polymer for dopant-free perovskite solar cell

IF 2.8 4区工程技术 Q2 POLYMER SCIENCE Macromolecular Research Pub Date : 2024-04-08 DOI:10.1007/s13233-023-00243-5

Jeonghyeon Park, Lakshman Chetan, Hyerin Kim, Je-Sung Jee, Yeong-Soon Gal, Sung-Ho Jin

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Abstract

The polymer was engineered and synthesized for the fabrication of perovskite solar cells (PSCs). Pyrazine-based polymer is used as a hole transport material (HTM) in PSCs. Pyrazine is suitable for major transport, such as affording high hole mobility and intermolecular enhancement, and has the advantage of being inexpensive. Remarkable results are achieved by polymerizing a pyrazine-based material (PzTBr) composed of thiophene moiety with a short alkyl group on both sides and a BDT-based material (BDTEH) to yield BDTEH–PzTBr. Dopant-free processed PSCs fabricated with BDTEH–PzTBr exhibited a PCE of 13.2% for green solvent and 15.9% for chloroform solvent. Therefore, the pyrazine-based polymer is an appropriate strategy to synthesize and explore as an HTM in PSCs.

Graphical abstract

A donor–acceptor (D–A)-conjugated polymer BDTEH–PzTBr was designed and successfully used as a hole transport material in perovskite solar cells. Due to the advantage of the molecular structure, and uniform morphology, the BDTEH–PzTBr-based device achieved a good power conversion efficiency of over 15.9%. High performance is achieved using easy synthesis processes and inexpensive materials.

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用于无掺杂包晶太阳能电池的新型吡嗪基π共轭聚合物

这种聚合物是为制造过氧化物太阳能电池（PSCs）而设计和合成的。吡嗪基聚合物可用作 PSC 中的空穴传输材料（HTM）。吡嗪适用于主要传输，如提供高空穴迁移率和分子间增强，并且具有价格低廉的优点。通过聚合由两侧带有短烷基的噻吩分子组成的吡嗪基材料（PzTBr）和 BDT 基材料（BDTEH）生成 BDTEH-PzTBr，取得了显著的效果。用 BDTEH-PzTBr 制作的无掺杂处理 PSC 在绿色溶剂中的 PCE 为 13.2%，在氯仿溶剂中的 PCE 为 15.9%。因此，吡嗪基聚合物是在 PSCs 中合成和探索 HTM 的合适策略。由于分子结构和均匀形貌的优势，基于 BDTEH-PzTBr 的器件实现了超过 15.9% 的良好功率转换效率。利用简单的合成工艺和廉价的材料实现了高性能。

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来源期刊

Macromolecular Research 工程技术-高分子科学

CiteScore

4.70

自引率

8.30%

发文量

100

审稿时长

1.3 months

期刊介绍： Original research on all aspects of polymer science, engineering and technology, including nanotechnology Presents original research articles on all aspects of polymer science, engineering and technology Coverage extends to such topics as nanotechnology, biotechnology and information technology The English-language journal of the Polymer Society of Korea Macromolecular Research is a scientific journal published monthly by the Polymer Society of Korea. Macromolecular Research publishes original researches on all aspects of polymer science, engineering, and technology as well as new emerging technologies using polymeric materials including nanotechnology, biotechnology, and information technology in forms of Articles, Communications, Notes, Reviews, and Feature articles.