A comprehensive review on defect passivation and gradient energy alignment strategies for highly efficient perovskite solar cells

dc.contributor.authorSaykar, Nilesh G.
dc.contributor.authorArya, Anil
dc.contributor.authorMahapatra, S.K.
dc.date.accessioned2024-01-21T10:42:33Z
dc.date.accessioned2024-08-13T12:44:37Z
dc.date.available2024-01-21T10:42:33Z
dc.date.available2024-08-13T12:44:37Z
dc.date.issued2021-10-07T00:00:00
dc.description.abstractRecent advances in photovoltaic devices demonstrate a potential candidature of the lead halide perovskite solar cells (PSCs) to fulfill the all-electric future of the world. Further improvements in efficiency and stability require minimization of non-radiative recombination arising due to the tr ap states created by the vacancies and defects. The device's performance is mostly determined by the perovskite absorber material, which has single-cation, mixed-cation, and/or mixed-halide composition-dependent optoelectronic capabilities. Herein, we present an insight on the state of the art of PSCs, including types of defects, their effects, and remedies of the same. Various design strategies administered to grow highly crystalline perovskite films with low defects at interfaces are described in detail. The inclusion of a few nm thin interlayer between perovskite and charge transport layer (CTL) is an effective way to passivate the defect at the interface. Furthermore, additive engineering is emerging as an excellent strategy to grow the defect-free perovskite by simply adding a polymer, ionic liquids, organic/inorganic salts in precursor solution without precipitating after film formation. The mitigation of charge recombination could be achieved by efficient charge extraction through proper energy alignment of CTLs and absorbers. Notably, we emphasize the interface, additive, and gradient band alignment engineering and resulting improvement in the photocurrent density, photovoltage, power conversion efficiency, and long-term stability. The present review gives complete information about PSCs, starting from the selection of the materials to PSC fabrication, charge carrier dynamics, defects, effects, and remedies. We hope that this summarised information will give a basic understanding of designing new passivation strategies for advancing PSC's present state of the art. � 2021 IOP Publishing Ltd.en_US
dc.identifier.doi10.1088/1361-6463/ac2d63
dc.identifier.issn223727
dc.identifier.urihttp://10.2.3.109/handle/32116/3675
dc.identifier.urlhttps://iopscience.iop.org/article/10.1088/1361-6463/ac2d63
dc.language.isoen_USen_US
dc.publisherIOP Publishing Ltden_US
dc.subjectadditive engineeringen_US
dc.subjectcharge carrier dynamicsen_US
dc.subjectdefect passivationen_US
dc.subjectgraded heterojunctionsen_US
dc.subjectgradient energy alignmenten_US
dc.subjectinterface passivationen_US
dc.subjectperovskite solar cellen_US
dc.titleA comprehensive review on defect passivation and gradient energy alignment strategies for highly efficient perovskite solar cellsen_US
dc.title.journalJournal of Physics D: Applied Physicsen_US
dc.typeReviewen_US
dc.type.accesstypeClosed Accessen_US

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