Indolocarbazole-core linked triphenylamine as an interfacial passivation layer for perovskite solar cells
作者:Yulin Tan、Haoliang Cheng、Yang Zhao、Li Wan、Zhong-Sheng Wang
DOI:10.1039/d2ta00499b
日期:——
two small organic molecules with hole transport properties, 4,4′-(5,11-dioctyl-5,11-dihydroindolo[3,2-b]carbazole-6,12-diyl)bis(N,N-bis(4-methoxyphenyl)aniline) (TM5) and 4,4′-(5,11-dioctyl-5,11-dihydroindolo[3,2-b]carbazole-6,12-diyl)bis(N,N-bis(4-(methylthio)phenyl)aniline) (TM6), as interfacial layers between the perovskite and hole transport layer (HTL) in perovskite solar cells (PSCs). There exist
我们在此设计并合成了两个具有空穴传输特性的有机小分子,4,4'-(5,11-dioctyl-5,11-dihydroindolo[3,2- b ]carbazole-6,12-diyl)bis( N , N-双(4-甲氧基苯基)苯胺)( TM5 )和4,4'-(5,11-二辛基-5,11-二氢吲哚[3,2- b ]咔唑-6,12-二基)双( N , N-双(4-(甲硫基)苯基)苯胺) ( TM6),作为钙钛矿太阳能电池(PSC)中钙钛矿和空穴传输层(HTL)之间的界面层。X射线光电子和红外光谱表明,TM分子与钙钛矿之间存在配位相互作用和氢键。因此,在钙钛矿薄膜分别涂覆TM5和TM6层后,缺陷密度从2.78×10 15显着降低到6.49×10 14和4.99×10 14 cm -3。此外,钙钛矿、界面层和 HTL 之间形成梯度能级排列。结果,空穴提取显着增强并且电荷复合显着减慢。这因此, TM5和TM6界面层将功率转换效率