Publication Type
Journal Article
Publication Date (Issue Year)
2022
Journal Name
Scientific Reports
Abstract
n this paper, we use Polyethylene Oxide (PEO) particles to control the morphology of Formamidinium (FA)‑rich perovskite films and achieve large grains with improved optoelectronic properties. Consequently, a planar perovskite solar cell (PSC) is fabricated with additions of 5 wt% of PEO, and the highest PCE of 18.03% was obtained. This solar cell is also shown to retain up to 80% of its initial PCE after about 140 h of storage under the ambient conditions (average relative humidity of 62.5 ± 3.25%) in an unencapsulated state. Furthermore, the steady‑state PCE of the PEO‑modified PSC device remained stable for long (over 2500 s) under continuous illumination. This addition of PEO particles is shown to enable the tuning of the optoelectronic properties of perovskite films, improvements in the overall photophysical properties of PSCs, and an increase in resistance to the degradation of PSCs.
Keywords
polyethylene oxide particles, photo‑physical properties, stability, FA‑rich perovskite solar cells
Rsif Scholar Name
Richard Kipyegon Koech
Thematic Area
Minerals, Mining and Materials Engineering
Africa Host University (AHU)
African University of Science and Technology (AUST), Nigeria
Funding Statement
This work was funded by PASET-RSIF and was in part supported by PAMI (P126974), NSF (DMR 2018326) and Worcester Polytechnic Institute Global Fund.
Recommended Citation
Koech, R. K., Olanrewaju, Y. A., Ichwani, R., Kigozi, M., Oyewole, D. O., Oyelade, O. V., Sanni, D. M., Adeniji, S. A., Colin‑Ulloa, E., Titova, L. V., Martin, J. L., Grimm, R. L., Bello, A., Oyewole, O. K., Ntsoenzok, E., & Soboyejo, W. O. (2022). Effects of polyethylene oxide particles on the photo-physical properties and stability of FA-rich perovskite solar cells. Scientific Reports, 12 (1), 12860. https://doi.org/10.1038/s41598-022-15923-y