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- Seok, Sang Il
- Laboratory for Energy Harvesting Materials and Systems
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Fabrication of Efficient Formamidinium Tin Iodide Perovskite Solar Cells through SnF2-Pyrazine Complex
- Author(s)
- Lee, Seon Joo, Shin, Seong Sik, Kim, Young Chan, Kim, Dasom, Ahn, Tae Kyu, Noh, Jun Hong, Seo, Jangwon, Seok, Sang Il
- Issued Date
- 2016-03
- Citation
- JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, v.138, no.12, pp.3974 - 3977
- Abstract
- To fabricate efficient formamidinium tin iodide (FASnI(3)) 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 FASnI(3) 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.
- Publisher
- AMER CHEMICAL SOC
- ISSN
- 0002-7863
- Keyword
- PHOTOVOLTAIC APPLICATIONS, LIGHT
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