Journal
CELL REPORTS PHYSICAL SCIENCE
Volume 2, Issue 12, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.xcrp.2021.100648
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Funding
- Japan Science and Technology Agency (JST)
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Researchers have developed encapsulated mesoporous-carbon perovskite solar mini-modules that exhibit high stability, retaining over 92% of initial performance after 3,000 hours of damp-heat aging at 85 degrees C/85% relative humidity. This stability is attributed to a light-induced performance increase phenomenon, involving organic molecules forming a positive interface effect on charge transport and ion migration, expanding our understanding of stability mechanisms in perovskite photovoltaics.
Improving stability has become one of the most important objectives in the practical application of perovskite photovoltaics. Here, we develop encapsulated mesoporous-carbon perovskite solar mini-modules that retain more than 92% of their initial performance after 3,000 h of damp-heat aging at 85 degrees C/85% relative humidity, while maintaining 90% of the initial value (T90) for 3,260 h, equivalent to 20-year stability in outdoor use. This stability is attributed to the light-induced performance increase phenomenon. The mechanism is associated with the organic molecules 5-ammoniumvaleric acid and methylammonium forming a quasi-2-dimensional perovskite/metal oxide interface with a positive effect on charge transport and ion migration. This work extends our present understanding of the mechanism underlying the light-induced performance and stability increase.
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