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- W2891508367 abstract "Recently, Pb‐based organometal halide perovskite solar cells have passed 20% power conversion efficiency (PCE). However, the main issue hampering commercialization is toxic Pb contained in these cells. Therefore, great attention is devoted to replace Pb by less harmful metals such as Bi. Yet, the most efficient methylammonium bismuth iodide (MBI) perovskite solar cells reported in literature reach PCE up to 0.2%. In this work, MBI perovskite solar cells, which are processed by spin‐coating under inert nitrogen atmosphere, employing a standard non‐inverted stack are presented. The control of perovskite morphology by modifying the process has been highlighted and the impact on photovoltaic (PV) characteristics has been shown. It is observed that the concentration of the perovskite solution (0.15–0.30 M) has a huge impact on the crystallite size, and the rotation speed during the spin‐coating process determines the layer coverage. Exposure of MBI solar cells to ambient air is found to be essential to obtain the highest short‐circuit current and open‐circuit voltage. The PCE increases over time, from 0.004% directly after processing up to 0.17% after 48 h. The fabricated cells exhibit an open‐circuit voltage of 0.72 V, which is the highest value published for this type of solar cell." @default.
- W2891508367 created "2018-09-27" @default.
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- W2891508367 date "2018-09-10" @default.
- W2891508367 modified "2023-10-05" @default.
- W2891508367 title "Morphology Control of Organic-Inorganic Bismuth-Based Perovskites for Solar Cell Application" @default.
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- W2891508367 doi "https://doi.org/10.1002/pssa.201800409" @default.
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