Unveiling the Relationship between the Perovskite Precursor Solution and the Resulting Device Performance

Article abstract of DOI:10.1021/jacs.0c00411

For the fabrication of perovskite solar cells (PSCs) using a solution process, it is essential to understand the characteristics of the perovskite precursor solution to achieve high performance and reproducibility. The colloids (iodoplumbates) in the perovskite precursors under various conditions were investigated by UV-visible absorption, dynamic light scattering, photoluminescence, and total internal reflection fluorescence microscopy techniques. Their local structure was examined by in situ X-ray absorption fine structure studies. Perovskite thin films on a substrate with precursor solutions were characterized by transmission electron microscopy, X-ray diffraction analysis, space-charge-limited current, and Kelvin probe force microscopy. The colloidal properties of the perovskite precursor solutions were found to be directly correlated with the defect concentration and crystallinity of the perovskite film. This work provides guidelines for controlling perovskite films by varying the precursor solution, making it possible to use colloid-engineered lead halide perovskite layers to fabricate efficient PSCs.

Full text of DOI:10.1021/jacs.0c00411

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Article
Unveiling the relationship between the perovskite
precursor solution and the resulting device performance
Jincheol Kim, Byung-wook Park, Jongho Baek, Jae Sung Yun, Hyoung-Woo Kwon,
Jan Seidel, Hanul Min, Simao Coelho, Sean Lim, Shujuan Huang, Katharina Gaus,
Martin A. Green, Tae Joo Shin, Anita W. Y. Ho-Baillie, Min Gyu Kim, and Sang Il Seok
J. Am. Chem. Soc., Just Accepted Manuscript • DOI: 10.1021/jacs.0c00411 • Publication Date (Web): 04 Mar 2020
Downloaded from pubs.acs.org on March 5, 2020
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ACS Paragon Plus Environment

Journal of the American Chemical Society
Page 4 of 11
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ACS Paragon Plus Environment

Page 5 of 11
Journal of the American Chemical Society
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ACS Paragon Plus Environment

Journal of the American Chemical Society
Page 6 of 11
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ACS Paragon Plus Environment

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Journal of the American Chemical Society
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Page 8 of 11
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ACS Paragon Plus Environment

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Journal of the American Chemical Society
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Journal of the American Chemical Society
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