Molecular dyads with non-fused electron acceptor backbones for single-component organic solar cells. Issue 36 (19th August 2022)

• Record Type: Journal Article
• Authors: Wei, Wang; Gao, Yuan; Wu, Yao; Yang, Xinrong; Chen, Zhihao; Chen, Zeng; Wang, Tao; Sun, Rui; Wu, Qiang; Hao, Xiaotao; Zhu, Haiming; Ponomarenko, Sergey; Luponosov, Yuriy; Min, Jie
• Is Part Of: Journal of materials chemistry. Volume 10:Issue 36(2022)
• Page Start: 18753
• Page End: 18761
• Publication Date: 2022-08-19
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/d2ta04310f
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : SW1, with non-fused acceptor backbones, creates a high PCE of 3.78% for SMOSCs, with a J SC of 9.12 mA cm −2 . Abstract : Despite years of development, the efficiencies of single molecular organic solar cells (SMOSCs) are still kept at low levels, mainly because of the lack of high-performance acceptor segments in this field. In this work, we report two molecular dyads, SW1 and SW2, by introducing an unfused non-fullerene acceptor as the acceptor segments and linear oligomers as the donor segments and linking by flexible alkyl chains. Excellent photovoltaic performance of SW1 is achieved, leading to a power conversion efficiency of 3.78%, which is a record high for non-fullerene acceptor-based SMOSCs reported in the literature thus far. Notably, both SW1 and SW2 SMOSCs exhibit promising long-term storage and photo stabilities, indicating great potential in practical application. The success of our strategy provides a new motif for designing highly efficient SMOSCs. It can be expected that the single-component materials especially in terms of molecular dyads have stepped into a new developing era.