期刊
ADVANCED MATERIALS
卷 32, 期 40, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202003801
关键词
air fabrication; ionic liquids; perovskite solar cells; polymerization; stability
类别
资金
- Swiss National Science Foundation [SNSF 20021E_186390]
- National Natural Science Foundation of China [11674324, 11604339]
- European Union [763977]
- Toyota Motor Europe, Brussels, Belgium
- SNSF funding through the Ambizione Energy project HYPER [PZENP2_173641]
- China Scholarship Council (CSC)
- Swiss National Science Foundation (SNF) [PZENP2_173641] Funding Source: Swiss National Science Foundation (SNF)
Despite the excellent photovoltaic properties achieved by perovskite solar cells at the laboratory scale, hybrid perovskites decompose in the presence of air, especially at high temperatures and in humid environments. Consequently, high-efficiency perovskites are usually prepared in dry/inert environments, which are expensive and less convenient for scale-up purposes. Here, a new approach based on the inclusion of an in situ polymerizable ionic liquid, 1,3-bis(4-vinylbenzyl)imidazolium chloride ([bvbim]Cl), is presented, which allows perovskite films to be manufactured under humid environments, additionally leading to a material with improved quality and long-term stability. The approach, which is transferrable to several perovskite formulations, allows efficiencies as high as 17% for MAPbI(3)processed in air % relative humidity (RH) >= 30 (from an initial 15%), and 19.92% for FAMAPbI(3)fabricated in %RH >= 50 (from an initial 17%), providing one of the best performances to date under similar conditions.
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