%0 Journal Article
%T Perfection of Perovskite Grain Boundary Passivation by Eu©\Porphyrin Complex for Overall©\Stable Perovskite Solar Cells
%A Jing Cao
%A Ruihao Chen
%A Ruiqian Meng
%A Xiaoxia Feng
%A Xudong Lv
%A Zi©\Ang Nan
%J Archive of "Advanced Science".
%D 2019
%R 10.1002/advs.201802040
%X The formation of defects at surfaces and grain boundaries (GBs) during the fabrication of solution©\processed perovskite film are thought to be responsible for its instability. Herein, Eu©\porphyrin complex (Eu©\pyP) is directly doped into methylammonium lead triiodide (MAPbI3) precursor, perfectly fabricating 2D (Eu©\pyP)0.5MAn ©\1PbnI3 n +1 platelets inlaying the GBs of 3D polycrystalline interstices in this protocol. The device based on Eu©\pyP doped perovskite film possesses a champion efficiency of 18.2%. More importantly, the doped perovskite solar cells device shows beyond 85% retention of its pristine efficiency value, whereas the pure MAPbI3 device has a rapid drop in efficiency down to 10% within 100 h under 45% humidity at 85 ˇăC in AM 1.5 G. The above acquired perovskite films reveal an unpredictable thermodynamic self©\healing ability. Consequently, the findings provide an avenue for defect passivation to synchronously improve resistibility to moisture, heat, and solar light including UV
%K Eu©\porphyrin complex
%K perovskite grain boundary passivation
%K perovskite solar cells
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6402397/