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dc.contributor.authorSatapathi, Soumitra-
dc.contributor.authorTailor N.K.-
dc.identifier.citationJournal of Physical Chemistry C, 125(9): 5243-5250-
dc.description.abstractPhotosensitive dielectric and conductivity relaxation was observed in all inorganic lead-free Cs3Bi2Cl9 perovskite single crystals. Using impedance and modulus spectroscopy in dark and with subsequent light-on and -off conditions, a reversible shift in modulus peak frequencies was observed. Relevant phenomenological methods based on modified Cole-Cole- and Debyetype relaxation models were applied to analyze the light-sensitive dielectric and conductivity behavior. The detailed analysis of this reversible change in modulus spectra confirms the light-induced trap-assisted reversible dipolar relaxation phenomena in Cs3Bi2Cl9 crystals. The conductivity follows Jonscher's power law, and the value of power "n" was found to be ∼1, which further validates the Debye-type relaxation process. Our study provides an in-depth understanding and new insights into the dielectric and conductivity relaxation mechanism in perovskite single crystals, which motivates the future design of the perovskite single crystal-based energy storage devices. © 2021 American Chemical Society. All rights reserved.-
dc.publisherAmerican Chemical Society-
dc.relation.ispartofJournal of Physical Chemistry C-
dc.subjectCesium compounds-
dc.subjectChlorine compounds-
dc.subjectEnergy storage-
dc.subjectLight sensitive materials-
dc.subjectSingle crystals-
dc.subjectConductivity relaxation-
dc.subjectDebye-type relaxation-
dc.subjectDipolar relaxation-
dc.subjectIn-depth understanding-
dc.subjectModulus spectroscopy-
dc.subjectPeak frequencies-
dc.subjectPhotosensitive dielectrics-
dc.subjectReversible change-
dc.subjectBismuth compounds-
dc.titlePhotosensitive dielectric and conductivity relaxation in lead-free cs3bi2cl9 perovskite single crystals-
dc.affiliationSatapathi, S., Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India-
dc.affiliationTailor, N.K., Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India-
dc.description.fundingN.K.T. would like to acknowledge the UGC Research Fellowship. S.S. would like to acknowledge the Ministry of Electronics and Information technology DIC-1377-PHY. University Grants Committee, UGC-
dc.description.correspondingauthorSatapathi, S.; Department of Physics, India; email:
Appears in Collections:Journal Publications [PH]

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