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• W4313856780 endingPage "168809" @default.
• W4313856780 startingPage "168809" @default.
• W4313856780 abstract "Spiro-OMeTAD represents the benchmark hole transport material (HTM) in the state-of-the-art perovskite solar cells (PSCs). However, restricted by the low conductivity of pristine spiro-OMeTAD, dopants and a long oxidation process are required to improve the conductivity and hole mobility. The long oxidation in air not only prolongs the device fabrication period, but also leads to the decomposition of perovskite layer. Even worse, dopants such as tBP and Li-TFSI will be severely affected and cause irreversible damage during the long oxidation process, which will greatly affect the device performances. In this regard, a strong oxidant lead tetraacetate (LTA) is introduced into spiro-OMeTAD to significantly accelerate the oxidation process. Excitingly, the Pb2+ ions generate as a result of the reduction of LTA could strongly coordinate with tBP, thus hindering the evaporation of tBP, as well as the agglomeration of Li-TFSI. As a result, the PSCs based on LTA-doped spiro-OMeTAD show a high photo-to-electric conversion efficiency of 22.08% with excellent long-term stability and thermal stability. Overall speaking, LTA is commercially available and low-cost, more importantly, the accelerate oxidation process as well as the effect to stabilize the dopants in spiro-OMeTAD, makes it potential as a p-dopant for highly efficient and stable PSCs." @default.
• W4313856780 created "2023-01-10" @default.
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• W4313856780 date "2023-04-01" @default.
• W4313856780 modified "2023-09-25" @default.
• W4313856780 title "Dual functional lead tetraacetate oxidant in Spiro-OMeTAD toward efficient and stable perovskite solar cells" @default.
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• W4313856780 doi "https://doi.org/10.1016/j.jallcom.2023.168809" @default.
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