Composition engineering of operationally stable CsPbI2Br perovskite solar cells with a record efficiency over 17%

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dc.authorid0000-0002-2626-4050en_US
dc.authorid0000-0001-9852-7246en_US
dc.contributor.authorÖztürk, Teoman
dc.contributor.authorAkman, Erdi
dc.contributor.authorShalan, Ahmed Esmail
dc.contributor.authorAkın, Seçkin
dc.date.accessioned2021-06-07T08:52:51Z
dc.date.available2021-06-07T08:52:51Z
dc.date.issued2021en_US
dc.departmentKMÜ, Mühendislik Fakültesi, Metalurji ve Malzeme Mühendisliği Bölümüen_US
dc.descriptionWOS:000685273000001
dc.description.abstractDespite the rapid progress in inorganic cesium lead halide perovskite (CsPbX3) materials originating from excellent thermal stability; their poor phase stability at room temperature and lower efficiency compared to organic-inorganic counterparts still limit their development toward commercialization. Recently, Pb-site doping of inorganic perovskites stand outs for the improvement of aforementioned issues for emerging photovoltaic applications. Herein, we introduce a compositional engineering approach to tune the CsPbI2Br crystallization by directly incorporating iron (II) chloride (FeCl2) into perovskite precursor. The small amount of FeCl2 stabilizes the black α-phase to avoid the undesirable formation of the non-perovskite phase owing to Fe2+ induced grain size reduction. Besides, the FeCl2 incorporation thoroughly align the energy level, promote the built-in potential (Vbi), and reduce the defect states in the perovskite, resulting in a record power conversion efficiency (PCE) of 17.1% with a remarkable open-circuit voltage (VOC) of 1.31 V. More importantly, FeCl2-doped CsPbI2Br-based devices exhibit an exceptional operational stability with a retention of over 95% initial PCE after 330 h at maximum power point (MPP) tracking.en_US
dc.identifier.citationÖztürk, T., Akman, E., Shalan, A. E., Akın, S. (2021). Composition engineering of operationally stable CsPbI2Br perovskite solar cells with a record efficiency over 17%. Nano Energy, 87 doi:10.1016/j.nanoen.2021.106157en_US
dc.identifier.doi10.1016/j.nanoen.2021.106157
dc.identifier.issn2211-2855
dc.identifier.scopus2-s2.0-85106317802
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.nanoen.2021.106157
dc.identifier.urihttps://hdl.handle.net/11492/5042
dc.identifier.volume87en_US
dc.identifier.wosWOS:000685273000001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Sceince
dc.indekslendigikaynakScopus
dc.institutionauthorAkman, Erdi
dc.institutionauthorAkın, Seçkin
dc.language.isoen
dc.publisherElsevieren_US
dc.relation.journalNano Energyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectInorganic Perovskite Solar Cellsen_US
dc.subjectCspbı2bren_US
dc.subjectPb-Site Dopingen_US
dc.subjectComposition Engineeringen_US
dc.titleComposition engineering of operationally stable CsPbI2Br perovskite solar cells with a record efficiency over 17%en_US
dc.typeArticle

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