Interracial stabilization for inverted perovskite solar cells with long-term stability

• 作者: Wei Chen Bing Han Qin Hu Meng Gu Yudong Zhu Wenqiang Yang Yecheng Zhou Deying Luo Fang-Zhou Liu Rui Cheng Rui Zhu Shien-Ping Feng Aleksandra B.Djuri(s)i(c) Thomas P.Russell Zhubing He
• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2021,（10）
• 所属期刊栏目: ARTICLES
• 页码范围: 991-1002
• 页数: 12页
• 语种: 英文

摘要

Perovskite solar cells (PSCs) commonly exhibit significant performance degradation due to ion migration through the top charge transport layer and ultimately metal electrode corrosion.Here,we demonstrate an interfacial management strategy using a boron chloride subphthalocyanine (Cl6SubPc)/fullerene electron-transport layer,which not only passivates the interfacial defects in the perovskite,but also suppresses halide diffusion as evidenced by multiple techniques,including visual element mapping by electron energy loss spectroscopy.As a result,we obtain inverted PSCs with an efficiency of 22.0％ (21.3％ certified),shelf life of 7000 h,T8o of 816 h under damp heat stress (compared to less than 20 h without Cl6SubPc),and initial performance retention of 98％ after 2000 h at 80 ℃C in inert environment,90％ after 2034 h of illumination and maximum power point tracking in ambient for encapsulated devices and 95％ after 1272 h outdoor testing ISOS-O-1,Our strategy and results pave a new way to move PSCs forward to their potential commercialization solidly.