材料科学
堆积
有机太阳能电池
能量转换效率
接受者
固态
吸收(声学)
噻吩
分子间力
带隙
二进制数
电子受体
电子
光电子学
光化学
结晶学
纳米技术
有机化学
分子
聚合物
化学
复合材料
物理
凝聚态物理
作者
Xueliang Shi,Xunfan Liao,Ke Gao,Lijian Zuo,Jingde Chen,Jingbo Zhao,Feng Liu,Yiwang Chen,Alex K.‐Y. Jen
标识
DOI:10.1002/adfm.201802324
摘要
Abstract A novel acceptor–donor–acceptor (A–D–A) type electron acceptor 6TIC‐4F with terthieno[3,2‐ b ]thiophene (6T) as the core unit is rationally designed and synthesized, which exhibits an extraordinarily narrow bandgap (≈1.24 eV) and strong absorption between 650 and 1000 nm. X‐ray crystallographic analysis reveals that it has unique intermolecular π–π stacking. The solar cells based on the as‐cast poly[(2,6‐(4,8‐bis(5‐(2‐ethylhexyl)thiophen‐2‐yl)‐benzo[1,2‐ b :4,5‐ b′ ]dithiophene))‐ alt ‐(5,5‐(1′,3′‐di‐2‐thienyl‐5′,7′‐bis(2‐ethylhexyl)benzo[1′,2′‐ c :4′,5′‐ c′ ]dithiophene‐4,8‐dione))]) (PBDB‐T): 6TIC‐4F binary blends exhibit an excellent power conversion efficiency (PCE) of 11.14% with a high J SC of 23.00 mA cm −2 , and a high fill factor of 0.67, which represents one of the best PCE values for low bandgap ( E g < 1.3 eV)–based organic solar cells.
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