Partial cation substitution reduces iodide ion transport in lead iodide perovskite solar cells
نویسندگان
چکیده
منابع مشابه
Ionic transport in hybrid lead iodide perovskite solar cells
Solar cells based on organic-inorganic halide perovskites have recently shown rapidly rising power conversion efficiencies, but exhibit unusual behaviour such as current-voltage hysteresis and a low-frequency giant dielectric response. Ionic transport has been suggested to be an important factor contributing to these effects; however, the chemical origin of this transport and the mobile species...
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In this work, a fully tin-based, mixed-organic-cation perovskite absorber (FA) x (MA)1-x SnI3 (FA = NH2CH = NH2+, MA = CH3NH3+) for lead-free perovskite solar cells (PSCs) with inverted structure is presented. By optimizing the ratio of FA and MA cations, a maximum power conversion efficiency of 8.12% is achieved for the (FA)0.75(MA)0.25SnI3-based device along with a high open-circuit voltage o...
متن کاملUnravelling the mechanism of photoinduced charge transfer processes in lead iodide perovskite solar cells
Lead halide perovskites have recently been used as light absorbers in hybrid organic–inorganic solid-state solar cells, with efficiencies as high as 15% and open-circuit voltages of 1 V. However, a detailed explanation of the mechanisms of operation within this photovoltaic system is still lacking. Here, we investigate the photoinduced charge transfer processes at the surface of the perovskite ...
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ژورنال
عنوان ژورنال: Energy & Environmental Science
سال: 2019
ISSN: 1754-5692,1754-5706
DOI: 10.1039/c9ee00476a