Recent Progress of Solution-Processed Thickness-Insensitive Cathode Interlayers for High-Performance Organic Solar Cells

IF 18.5 1区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Ping Cai, Can Song, Yating Du, Jianbin Wang, Jing Wang, Lixian Sun, Feng Gao, Qifan Xue
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Abstract

Organic solar cells (OSCs) have shown great applications potential in flexible/wearable electronics, indoor photovoltaics and so on. The efficiencies of single-junction OSCs have exceeded 19%, making the commercialization of OSCs brighter. Large-area printing fabrication is a key way to the commercialization of OSCs, and solution-processed thickness-insensitive cathode interlayers (CILs) are urgently needed for large-area printing fabrication. High electron mobility of cathode interfacial materials (CIMs) is critical to enable thickness-insensitive CILs. N-type self-doped characteristics can endow organic CIMs with high electron mobility. Different type of n-type self-doped CIMs show different applicability in conventional OSCs and inverted OSCs. External n-type dopants can further increase electron mobility of hybrid blends. Particularly, ZnO doped with organic dyes can achieve superior photoconductivity in inverted OSCs. This review focuses on solution-processed thickness-insensitive CILs for high-performance OSCs. In conventional OSCs, n-type self-doped small molecules and polymers, and external n-doped hybrid blends as thickness-insensitive CILs are summarized. In inverted OSCs, n-type self-doped small-molecular electrolytes and polyelectrolytes, PEI-/PEIE-based polyelectrolytes, and external n-doped hybrid blends (including organic-organic and ZnO-organic) are summarized for thickness-insensitive CILs. The relationships between particular functions of CILs and chemical structures of CIMs are highlighted. Finally, summary and outlook of solution-processed thickness-insensitive CILs are provided.

Abstract Image

高性能有机太阳能电池溶液法制备厚度不敏感阴极夹层研究进展
有机太阳能电池在柔性/可穿戴电子、室内光伏等领域显示出巨大的应用潜力。单结OSCs的效率已超过19%,使OSCs的商业化前景更加光明。大面积印刷制造是OSCs商业化的关键途径,大面积印刷制造迫切需要溶液加工的厚度不敏感阴极夹层(CILs)。阴极界面材料(CIMs)的高电子迁移率是实现厚度不敏感CIMs的关键。n型自掺杂特性使有机CIMs具有较高的电子迁移率。不同类型的n型自掺杂CIMs在常规OSCs和反向OSCs中的适用性不同。外部n型掺杂剂可以进一步提高杂化共混物的电子迁移率。特别是,ZnO掺杂有机染料可以在倒立OSCs中获得优异的光导电性。本文综述了用于高性能osc的溶液处理厚度不敏感CILs。摘要综述了传统的自掺n型小分子聚合物和外掺n型杂化共混物作为厚度不敏感CILs的研究现状。在反向OSCs中,总结了n型自掺杂小分子电解质和聚电解质、PEI-/ peie基聚电解质和外部n掺杂杂化共混物(包括有机-有机和zno -有机)用于厚度不敏感的CILs。强调了CILs的特定功能与CIMs的化学结构之间的关系。最后,对溶液法制备的厚度不敏感CILs进行了总结和展望。
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来源期刊
Advanced Functional Materials
Advanced Functional Materials 工程技术-材料科学:综合
CiteScore
29.50
自引率
4.20%
发文量
2086
审稿时长
2.1 months
期刊介绍: Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week. Advanced Functional Materials is known for its rapid and fair peer review, quality content, and high impact, making it the first choice of the international materials science community.
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