Light Stability Enhancement of Perovskite Solar Cells Using 1H,1H,2H,2H‐Perfluorooctyltriethoxysilane Passivation

Passivation approaches of perovskite surface are key to improve the light stability of perovskite solar cells. However, a passivation strategy is still required to enhance the durability of the perovskite layer. Here, a promising passivation concept is demonstrated by applying a fluorinated agent on...

Full description

Saved in:
Bibliographic Details
Published in:Solar RRL 2021-03, Vol.5 (3), p.n/a
Main Authors: Kanda, Hiroyuki, Usiobo, Onovbaramwen J., Momblona, Cristina, Abuhelaiqa, Mousa, Sutanto, Albertus Adrian, Igci, Cansu, Gao, Xiao-Xin, Audinot, Jean-Nicolas, Wirtz, Tom, Nazeeruddin, Mohammad Khaja
Format: Article
Language:English
Subjects:
fluorinated agents
nanosecondary ion mass spectrometry
passivation
perovskites
solar cells
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Passivation approaches of perovskite surface are key to improve the light stability of perovskite solar cells. However, a passivation strategy is still required to enhance the durability of the perovskite layer. Here, a promising passivation concept is demonstrated by applying a fluorinated agent on the perovskite layer for light stability improvement. Such fluorinated passivation agents can prevent the formation of Pb0 at the perovskite surface resulting in suppressing a defect‐induced recombination and improving the durability of the perovskite solar cells. As an additional benefit, the fluorinated passivation agent increases the VOC which improves the photovoltaic performance of the perovskite solar cells. Consequently, with a fluorinated passivation agent, the perovskite maintains a power conversion efficiency of 95% after 300 h of light illumination. It is found that the fluorinated passivation material of 1H,1H,2H,2H‐perfluorooctyltriethoxysilane (PFOTES) can improve the stability of the perovskite solar cells. Fluorinated‐based passivation agent suppresses Pb0 at the perovskite surface during a light soaking, which prevents from increasing the recombination pathway and results in improving the light stability of the perovskite solar cells. Consequently, a functional passivation strategy for enhancing light stability with the fluorinated passivation agent is demonstrated, maintaining a 95% photoconversion efficiency for 300 h under the light illumination.
ISSN:2367-198X
2367-198X
DOI:10.1002/solr.202000650