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In this study, a highly mesoporous Zn<jats:sub>2<\/jats:sub>Ti<jats:sub>3<\/jats:sub>O<jats:sub>8<\/jats:sub> (m\u2010ZTO) scaffold is synthesized by ion\u2010exchange method and used as ETL for the fabrication of methyl ammonium lead halide (CH<jats:sub>3<\/jats:sub>NH<jats:sub>3<\/jats:sub>PbI<jats:sub>3<\/jats:sub>) perovskite solar cells. The optimized devices exhibit 17.21\u2009% power conversion efficiency (PCE) with an open circuit voltage (<jats:italic>V<\/jats:italic><jats:sub>oc<\/jats:sub>) of 1.02\u2005V, short\u2010circuit current density (<jats:italic>J<\/jats:italic><jats:sub>sc<\/jats:sub>) of 21.97\u2005mA\u2009cm<jats:sup>\u22122<\/jats:sup> and fill factor (FF) of 0.77 under AM\u20051.5G sunlight (100\u2005mW\u2009cm<jats:sup>\u22122<\/jats:sup>). The PCE is significantly higher than that based on mesoporous ST01 (m\u2010ST01; 10\u2005nm TiO<jats:sub>2<\/jats:sub> powder) layer (<jats:italic>\u03b7<\/jats:italic>=14.93\u2009%), which is ascribed to the deeper conductive band of ZTO nanoparticles, better light absorption and smaller charge recombination. The devices stored for 100\u2005days at ambient temperature with humidity of 10\u2009% showed excellent stability with only 12\u2009% reduction of the PCE. The charge transmission kinetic and long\u2010term stability parameters of the ZTO\u2010based perovskite film growth are discussed as well.<\/jats:p>","DOI":"10.1002\/cssc.201701779","type":"journal-article","created":{"date-parts":[[2017,11,21]],"date-time":"2017-11-21T08:52:46Z","timestamp":1511254366000},"page":"424-431","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":21,"title":["Highly Efficient Perovskite Solar Cells Based on Zn<sub>2<\/sub>Ti<sub>3<\/sub>O<sub>8<\/sub> Nanoparticles as Electron Transport Material"],"prefix":"10.1002","volume":"11","author":[{"given":"Aiying","family":"Pang","sequence":"first","affiliation":[{"name":"State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences  Fuzhou Fujian 350002 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