Thiolactone copolymer donor gifts organic solar cells a 16.72％ efficiency

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2019,（21）
• 页码范围: 1573-1576
• 页数: 4页
• 语种: 英文

摘要

Since 1995,bulk-heterojunction organic solar cells consisting of one or two organic donors and one or two organic acceptors have been fighting for high power conversion efficiencies (PCEs) and good stability [1].Until recent years,this next-generation photovoltaic technology starts to offer decent PCEs,shedding the light on commercialization,and attracting great attention again [2-14].Compared with the continuously emerging high-performance nonfullerene acceptors,high-performance donors are rare.Only a few donor-acceptor (D-A) copolymer donors like PM6 [15] and P2F-EHp [16] gave ＞15％ PCEs.Developing more high-performance donors is a great mission for the field.Recently,our group reported new D-A copolymers based on fused-ring aromatic lactone (FRAL) building block.