Fabrication of Efficient Formamidinium Tin Iodide Perovskite Solar Cells through SnF2–Pyrazine Complex
- 17 March 2016
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 138 (12), 3974-3977
- https://doi.org/10.1021/jacs.6b00142
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+ con-tent. Here we used solvent-engineering and non-solvent dripping process with SnF2 as an inhibitor of Sn4+. However, excess SnF2 induce 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.Keywords
Funding Information
- Korea Research Institute of Chemical Technology
- National Research Foundation of Korea (NRF-2007-00091, NRF-2011-0031565, NRF-2015M1A2A2056542)
This publication has 21 references indexed in Scilit:
- Lead-free germanium iodide perovskite materials for photovoltaic applicationsJournal of Materials Chemistry A, 2015
- High-performance photovoltaic perovskite layers fabricated through intramolecular exchangeScience, 2015
- Compositional engineering of perovskite materials for high-performance solar cellsNature, 2015
- Lead‐Free Halide Perovskite Solar Cells with High Photocurrents Realized Through Vacancy ModulationAdvanced Materials, 2014
- The light and shade of perovskite solar cellsNature Materials, 2014
- The emergence of perovskite solar cellsNature Photonics, 2014
- Lead-free solid-state organic–inorganic halide perovskite solar cellsNature Photonics, 2014
- Lead-free organic–inorganic tin halide perovskites for photovoltaic applicationsEnergy & Environmental Science, 2014
- Organohalide lead perovskites for photovoltaic applicationsEnergy & Environmental Science, 2014
- Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic CellsJournal of the American Chemical Society, 2009