串联
接受者
有机太阳能电池
能量转换效率
吸收(声学)
化学
光电子学
光化学
材料科学
纳米技术
物理
聚合物
凝聚态物理
复合材料
作者
Jian Qiu Wang,Chaoyi Wang,Yafei Wang,Jiawei Qiao,Junzhen Ren,Jiayao Li,Wenxuan Wang,Zhihao Chen,Yue Yu,Xiaotao Hao,Shaoqing Zhang,Jianhui Hou
标识
DOI:10.1002/anie.202400565
摘要
Abstract Organic solar cells (OSCs) are still suffering from the low light utilization and unstable under ultraviolet irradiation. To tackle these challenges, we design and synthesize a non‐fused acceptor based on 1‐(2‐butyloctyl)‐1H‐pyrrole as π‐bridge unit, denoted as GS70, which serves as active layer in the front‐cell for constructing tandem OSCs with a parallel configuration. Benefiting from the well‐complementary absorption spectra with the rear‐cell, GS70‐based parallel tandem OSCs exhibit an improved photoelectron response over the range between 600–700 nm, yielding a high short‐circuit current density of 28.4 mA cm −2 . The improvement in light utilization translates to a power conversion efficiency of 19.4 %, the highest value among all parallel tandem OSCs. Notably, owing to the intrinsic stability of GS70, the manufactured parallel tandem OSCs retain 84.9 % of their initial PCE after continuous illumination for 1000 hours. Overall, this work offers novel insight into the molecular design of low‐cost and stability non‐fused acceptors, emphasizing the importance of adopting a parallel tandem configuration for achieving efficient light harvesting and improved photostability in OSCs.
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