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• W2893280712 abstract "To reduce the defects of perovskite films, various additives are often introduced into the precursor solution. Here, Hydriodic (HI) acid is used as additive in Isopropanol (IPA) solution of methylammonium iodide (MAI) in two-step spin-coated method to obtain high quality MAPbI3 perovskite film. According to the scanning electron microscope (SEM) image, the grain size of the film increases with the increase of the concentration of HI. When the concentration of addition is 0.004 vol% HI/IPA, the grain size is the largest and the film is the most uniform. In addition, photoluminescence spectra (PL) and Ultraviolet-visible (UV-Vis) absorption spectroscopy show the enhancement of the optical absorption, which also proves the improvement of the film’s quality. With the structure of ITO/PTAA/MAPbI3/PCBM/Ti/Au, Perovskite Solar Cells (PSCs) were fabricated using MAI solutions with different volume ratios of HI/IPA. The power conversion efficiency (PCE) of the best cell was increased to 18.21% from 16.1%. This study proposes a simple and very effective method of using two-step sequential deposition to produce high-performance PSCs." @default.
• W2893280712 created "2018-10-05" @default.
• W2893280712 creator A5000653833 @default.
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• W2893280712 date "2018-09-01" @default.
• W2893280712 modified "2023-10-10" @default.
• W2893280712 title "Large grain size CH₃NH₃PbI₃ film for perovskite solar cells with hydroic acid additive" @default.
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• W2893280712 doi "https://doi.org/10.1063/1.5048424" @default.
• W2893280712 hasPublicationYear "2018" @default.
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