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dc.contributor.authorPious, JK-
dc.contributor.authorBasavarajappa, MG-
dc.contributor.authorMuthu, C-
dc.contributor.authorNishikubo, R-
dc.contributor.authorSaeki, A-
dc.contributor.authorChakraborty, S-
dc.contributor.authorTakai, A-
dc.contributor.authorTakeuchi, M-
dc.contributor.authorVijayakumar, C-
dc.date.accessioned2021-11-18T16:23:16Z-
dc.date.available2021-11-18T16:23:16Z-
dc.date.issued2021-06-24-
dc.identifier.citationThe Journal of Physical Chemistry Letters; 12(24): 5758-5764en_US
dc.identifier.urihttps://pubs.acs.org/doi/10.1021/acs.jpclett.1c01321-
dc.identifier.urihttp://hdl.handle.net/123456789/3918-
dc.description.abstractBismuth-based zero-dimensional perovskites garner high research interest because of their advantages, such as excellent moisture stability and lower toxicity in comparison to lead-based congeners. However, the wide optical bandgap (>2 eV) and poor photoconductivity of these materials are the bottlenecks for their optoelectronic applications. Herein, we report a combined experimental and theoretical study of the structural features and optoelectronic properties of two novel and stable zero-dimensional bismuth perovskites: (biphenyl bis(methylammonium))1.5BiI6·2H2O (BPBI) and (naphthalene diimide bis(ethylammonium))1.5BiI6·2H2O (NDBI). NDBI features a remarkably narrower bandgap (1.82 eV) than BPBI (2.06 eV) because of the significant orbital contribution of self-assembled naphthalene diimide cations at the band edges of NDBI. Further, the FP-TRMC analysis revealed that the photoconductivity of NDBI is about 3.7-fold greater than that of BPBI. DFT calculations showed that the enhanced photoconductivity in NDBI arises from its type-IIa band alignment, whereas type-Ib alignment was seen in BPBI.en_US
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.subjectelectrical conductivityen_US
dc.subjectcationsen_US
dc.subjectperovskitesen_US
dc.subjectbismuthen_US
dc.subjectmaterialsen_US
dc.titleSelf-Assembled Organic Cations-Assisted Band-Edge Tailoring in Bismuth-Based Perovskites for Enhanced Visible Light Absorption and Photoconductivityen_US
dc.typeArticleen_US
Appears in Collections:2021

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