【摘 要】
：
Perovskite solar cells (PSCs) commonly exhibit significant performance degradation due to ion migration through the top charge transport layer and ultimately me
【机 构】
：
Department of Materials Science and Engineering, Shenzhen Key Laboratory of Full Spectral Solar Elec
论文部分内容阅读
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.
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