Fabrication of Efficient Formamidinium Tin Iodide Perovskite Solar Cells through SnF2-Pyrazine Complex

Seon Joo Lee; Seong Sik Shin; Young Chan Kim; Dasom Kim; Tae Kyu Ahn; Jun Hong Noh; Jangwon Seo; Sang Il Seok

doi:10.1021/jacs.6b00142

Fabrication of Efficient Formamidinium Tin Iodide Perovskite Solar Cells through SnF₂-Pyrazine Complex

Seon Joo Lee, Seong Sik Shin, Young Chan Kim, Dasom Kim, Tae Kyu Ahn, Jun Hong Noh, Jangwon Seo, Sang Il Seok

Research output: Contribution to journal › Article › peer-review

601 Citations (Scopus)

Abstract

To fabricate efficient formamidinium tin iodide (FASnI₃) perovskite solar cells (PSCs), it is essential to deposit uniform and dense perovskite layers and reduce Sn⁴⁺ content. Here we used solvent-engineering and nonsolvent dripping process with SnF₂ as an inhibitor of Sn⁴⁺. However, excess SnF₂ induces phase separation on the surface of the perovskite film. In this work, we report the homogeneous dispersion of SnF₂ via the formation of the SnF₂-pyrazine complex. Consequently, we fabricated FASnI₃ PSCs with high reproducibility, achieving a high power conversion efficiency of 4.8%. Furthermore, the encapsulated device showed a stable performance for over 100 days, maintaining 98% of its initial efficiency.

Original language	English
Pages (from-to)	3974-3977
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	138
Issue number	12
DOIs	https://doi.org/10.1021/jacs.6b00142
Publication status	Published - 2016 Apr 20
Externally published	Yes

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Biochemistry
Colloid and Surface Chemistry

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@article{8d174587969a461a92fbcc9e556c956e,

title = "Fabrication of Efficient Formamidinium Tin Iodide Perovskite Solar Cells through SnF2-Pyrazine Complex",

abstract = "To fabricate efficient formamidinium tin iodide (FASnI3) perovskite solar cells (PSCs), it is essential to deposit uniform and dense perovskite layers and reduce Sn4+ content. Here we used solvent-engineering and nonsolvent dripping process with SnF2 as an inhibitor of Sn4+. However, excess SnF2 induces phase separation on the surface of the perovskite film. In this work, we report the homogeneous dispersion of SnF2 via the formation of the SnF2-pyrazine complex. Consequently, we fabricated FASnI3 PSCs with high reproducibility, achieving a high power conversion efficiency of 4.8%. Furthermore, the encapsulated device showed a stable performance for over 100 days, maintaining 98% of its initial efficiency.",

author = "Lee, {Seon Joo} and Shin, {Seong Sik} and Kim, {Young Chan} and Dasom Kim and Ahn, {Tae Kyu} and Noh, {Jun Hong} and Jangwon Seo and Seok, {Sang Il}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Ministry of Science, ICT & Future Planning (MSIP) of Korea under contract number, and NRF-2007-00091 (Global Research Laboratory Program), NRF-2011-0031565 (Global Frontier R&D Program on Center for Multiscale Energy System), and NRF-2015M1A2A2056542 (climate change program). This work was also supported by internal program of the Korea Research Institute of Chemical Technology (KRICT), Republic of Korea. Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2016",

month = apr,

day = "20",

doi = "10.1021/jacs.6b00142",

language = "English",

volume = "138",

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journal = "Journal of the American Chemical Society",

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T1 - Fabrication of Efficient Formamidinium Tin Iodide Perovskite Solar Cells through SnF2-Pyrazine Complex

AU - Lee, Seon Joo

AU - Shin, Seong Sik

AU - Kim, Young Chan

AU - Kim, Dasom

AU - Ahn, Tae Kyu

AU - Noh, Jun Hong

AU - Seo, Jangwon

AU - Seok, Sang Il

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grants funded by the Ministry of Science, ICT & Future Planning (MSIP) of Korea under contract number, and NRF-2007-00091 (Global Research Laboratory Program), NRF-2011-0031565 (Global Frontier R&D Program on Center for Multiscale Energy System), and NRF-2015M1A2A2056542 (climate change program). This work was also supported by internal program of the Korea Research Institute of Chemical Technology (KRICT), Republic of Korea. Publisher Copyright: © 2016 American Chemical Society.

PY - 2016/4/20

Y1 - 2016/4/20

N2 - To fabricate efficient formamidinium tin iodide (FASnI3) perovskite solar cells (PSCs), it is essential to deposit uniform and dense perovskite layers and reduce Sn4+ content. Here we used solvent-engineering and nonsolvent dripping process with SnF2 as an inhibitor of Sn4+. However, excess SnF2 induces phase separation on the surface of the perovskite film. In this work, we report the homogeneous dispersion of SnF2 via the formation of the SnF2-pyrazine complex. Consequently, we fabricated FASnI3 PSCs with high reproducibility, achieving a high power conversion efficiency of 4.8%. Furthermore, the encapsulated device showed a stable performance for over 100 days, maintaining 98% of its initial efficiency.

AB - To fabricate efficient formamidinium tin iodide (FASnI3) perovskite solar cells (PSCs), it is essential to deposit uniform and dense perovskite layers and reduce Sn4+ content. Here we used solvent-engineering and nonsolvent dripping process with SnF2 as an inhibitor of Sn4+. However, excess SnF2 induces phase separation on the surface of the perovskite film. In this work, we report the homogeneous dispersion of SnF2 via the formation of the SnF2-pyrazine complex. Consequently, we fabricated FASnI3 PSCs with high reproducibility, achieving a high power conversion efficiency of 4.8%. Furthermore, the encapsulated device showed a stable performance for over 100 days, maintaining 98% of its initial efficiency.

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JF - Journal of the American Chemical Society

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ER -

Fabrication of Efficient Formamidinium Tin Iodide Perovskite Solar Cells through SnF₂-Pyrazine Complex

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