School of Chemistry, Sambalpur University, Jyoti Vihar-768019, Sambalpur, India.
Department of Physics, The LNM Institute of Information Technology (Deemed University), Rupa ki Nagal, Jamdoli, Jaipur, Rajasthan-302031, India.
Angew Chem Int Ed Engl. 2023 May 15;62(21):e202219245. doi: 10.1002/anie.202219245. Epub 2023 Mar 3.
The prerequisite for commercially viable organic solar cells (OSC) is to reduce the efficiency-stability-cost gap. Therefore, the cost of organic materials should be reduced by minimizing the synthetic steps, yet maintaining the molecular planarity and efficiencies achieved by the fused ring acceptors (FRA). In this respect, developing non-fused ring acceptors (NFRA) with suitable functionalization to favor conformational planarity and effective molecular packing is beneficial and cost-effective. Presently, the power conversion efficiency (PCE) for NFRAs is around 16 %, yet lower than the 19 % achieved for FRAs. Despite their potential, a thorough understanding of the effective structural design of NFRAs is necessary for developing efficient OSCs. This article pays special attention to the molecular design concept for NFRAs developed in the last years and analyzed the approach toward materials design and efficiency improvement, an important step toward technological application.
对于商业上可行的有机太阳能电池 (OSC)，其前提是缩小效率-稳定性-成本差距。因此，应通过最小化合成步骤来降低有机材料的成本，同时保持由稠环受体 (FRA) 实现的分子平面性和效率。在这方面，开发具有合适功能化的非稠环受体 (NFRA)，以有利于构象平面性和有效的分子堆积，是有益且具有成本效益的。目前，NFRA 的功率转换效率 (PCE) 约为 16%，低于 FRAs 实现的 19%。尽管它们具有潜力，但为了开发高效的 OSC，需要深入了解 NFRA 的有效结构设计。本文特别关注了过去几年中开发的 NFRA 的分子设计概念，并分析了材料设计和效率提高的方法，这是实现技术应用的重要步骤。
