Recent development of push-pull conjugated polymers for bulk-heterojunction photovoltaics: rational design and fine tailoring of molecular structures
Recent development of push-pull conjugated polymers for bulk-heterojunction photovoltaics: rational design and fine tailoring of molecular structures
复制标题
用于本体异质结光伏的推挽共轭聚合物的最新进展：分子结构的合理设计和精细定制
DOI：
10.1039/c2jm30470h
复制
发表时间：
2012-01-01
影响因子：
--
通讯作者：
Cao, Yong
中科院分区：
文献类型：
--
作者：
Duan, Chunhui;Huang, Fei;Cao, Yong
体异质结聚合物太阳能电池已成为一种具有吸引力的具有成本效益的太阳能-电力转换装置。近年来，该领域在新型光捕获材料的开发和器件优化方面取得了重大进展，使聚合物太阳能电池的功率转换效率从1%左右大幅提高到8.0%以上。给体聚合物分子结构的合理设计和精细剪裁对这些突出的进展做出了重大贡献。在所有类型的给体聚合物中，推挽共轭聚合物，由交替的富电子和缺电子单元组成，已经得到了最广泛的发展，并主导了聚合物太阳能电池的给体材料库，因为它们的固有的光学和电子性质可以容易地通过控制从给体单元到受体单元的分子内电荷转移来调节到所需的情况。本文综述了推拉型共轭聚合物的最新进展及其在太阳能电池中的应用。讨论了材料的化学结构与吸收光谱、能级、迁移率、光伏行为等性质之间的关系。
Bulk-heterojunction polymer solar cells have emerged as an attractive type of cost-effective solar energy-electrical power transforming device. Recently, great progress in the development of new photo-harvesting materials and device optimizations have been achieved in this field, resulting in the significant improvement of the power conversion efficiencies of polymer solar cells from around 1% to higher than 8.0%. The rational design and fine tailoring of the molecular structures of donor polymers significantly contributed to these prominent advances. Among all kinds of donor polymers, push-pull conjugated polymers, which consist of alternating electron-rich and electron-deficient units have been most extensively developed and have dominated the library of donor materials for polymer solar cells, because their intrinsic optical and electronic properties can be readily tuned to the desired situation by controlling the intramolecular charge transfer from donor unit to acceptor unit. This review provides a brief overview of the recent development of push-pull conjugated polymers and their application in solar cells. The relationships between the materials' chemical structures and properties, such as absorption spectra, energy levels, mobilities and photovoltaic behaviors, were also discussed.