Polymers and interfacial modifiers for durable perovskite solar cells: a review
Journal of Materials Chemistry C, ISSN: 2050-7526, Vol: 9, Issue: 37, Page: 12509-12522
2021
- 22Citations
- 35Captures
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Review Description
This review focuses on the advancements in stability of perovskite solar cells under stress from ambient moisture, high temperatures, and UV light exposure. Moisture stability has been improved by utilizing several polymeric encapsulation methods, moisture-resistant hole transport layers (HTLs), CFplasma treatments, and perovskite grain crosslinking. Fluorinated encapsulation methods have proven especially successful, producing cells that maintained their PCE after 75 days at 50% RH and 5 mW cmof UV radiation. Temperature destabilization has been hypothesized to occur as a result of perovskite phase transitions and the HTL dopant migration to the mesoporous TiOsurface. Temperature-sensitive perovskites have been stabilized by tuning the Goldschmidt tolerance factor and introducing thermally resistant HTLs embedded in a polymeric matrix with polycarbonate acting as an effective thermal insulating matrix. UV light instabilities have also been shown to occur due to the photocatalysis of TiOand the TiOperovskite interface. The introduction of a SbSbuffer or CsBr clusters as interface modifiers can stabilize the interface of TiOperovskite. Herein, we aim at highlighting the main processes that prevent perovskite degradation using polymers and interfacial modifiers.
Bibliographic Details
Royal Society of Chemistry (RSC)
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