10.1126\/sciadv.aaw2543<\/a><\/p>\nAuthors:<\/h4>\n
Yuhang Liu, Se\u00e7kin Ak\u0131n, Linfeng Pan, Ryusuke Uchida, Neha Arora, Jovana V. Mili\u0107, Alexander Hinderhofer, Frank Schreiber, Alexander R. Uhl, Shaik M. Zakeeruddin, Anders Hagfeldt, M. Ibrahim Dar, Micha\u00ebl Gr\u00e4tzel<\/p>\n
Abstract:<\/h4>\n
Preventing the degradation of metal perovskite solar cells (PSCs) by humid air poses a substantial challenge for their future deployment. We introduce here a two-dimensional (2D) A2<\/sub>PbI4<\/sub> perovskite layer using pentafluorophenylethylammonium (FEA) as a fluoroarene cation inserted between the 3D light-harvesting perovskite film and the hole-transporting material (HTM). The perfluorinated benzene moiety confers an ultrahydrophobic character to the spacer layer, protecting the perovskite light-harvesting material from ambient moisture while mitigating ionic diffusion in the device. Unsealed 3D\/2D PSCs retain 90% of their efficiency during photovoltaic operation for 1000 hours in humid air under simulated sunlight. Remarkably, the 2D layer also enhances interfacial hole extraction, suppressing nonradiative carrier recombination and enabling a power conversion efficiency (PCE) >22%, the highest reported for 3D\/2D architectures. Our new approach provides water- and heat-resistant operationally stable PSCs with a record-level PCE.<\/p>\n","protected":false},"excerpt":{"rendered":"DOI: 10.1126\/sciadv.aaw2543 Authors: Yuhang Liu, Se\u00e7kin Ak\u0131n, Linfeng Pan, Ryusuke Uchida, Neha Arora, Jovana V. Mili\u0107, Alexander Hinderhofer, Frank Schreiber, Alexander R. Uhl, Shaik M. Zakeeruddin, Anders Hagfeldt, M. Ibrahim Dar, Micha\u00ebl Gr\u00e4tzel Abstract: Preventing the degradation of metal perovskite solar cells (PSCs) by humid air poses a substantial challenge for their future deployment. We […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-207","post","type-post","status-publish","format-standard","hentry","category-sp-300-potentiostat"],"_links":{"self":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/207","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=207"}],"version-history":[{"count":0,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=\/wp\/v2\/posts\/207\/revisions"}],"wp:attachment":[{"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/citations.tools.bio-logic.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}