The Effect of Stoichiometry on the Stability of Inorganic Cesium Lead Mixed-Halide Perovskites Solar Cells

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dc.contributor.authorMa, Qingshan
dc.contributor.authorHuang, Shujuan
dc.contributor.authorChen, Sheng
dc.contributor.authorZhang, Meng
dc.contributor.authorLau, Cho Fair Jonathan
dc.contributor.authorLockrey, Mark
dc.contributor.authorMulmudi, Hemant Kumar
dc.contributor.authorShan, Yuchao
dc.contributor.authorYao, Jizhong
dc.contributor.authorZheng, Jianghui
dc.contributor.authorDeng, Xiaofan
dc.contributor.authorCatchpole, Kylie
dc.contributor.authorGreen, Martin Andrew
dc.contributor.authorHo-Baillie, Anita
dc.date.accessioned2021-09-28T00:04:36Z
dc.date.issued2017
dc.date.updated2020-11-23T11:16:16Z
dc.description.abstractMetal halide perovskite solar cells that use the inorganic cation Cs have been shown to have better thermal stability than the organic cation containing counterparts, and CsPbI2Br has a more suitable (lower) band gap than CsPbIBr2 as a photovoltaic energy harvesting material. However, increase in iodine content reduces structural stability due to the preference toward the non-perovskite orthorhombic phase when the film is exposed to air. In this work, the effect of varying stoichiometry of CsPbI2Br perovskite on film quality such as the grain size, presence of impurities and nature of impurity grains, photoluminescence, morphology, and elemental distribution are studied. Details on how to vary the stoichiometry during the dual source thermal evaporation process are reported. It is found that the air stability of CsPbI2Br film correlates with the CsBr-to-PbI2 deposition rate ratio, in which the CsBr-rich CsPbI2Br is the most stable upon air exposure, while the stoichiometrically balanced CsPbI2Br perovskite film gives the best photovoltaic performance. The encapsulated device maintains 90% of the initial performance after 240 h damp and heat test at 85 °C and 85% relative humidity.en_AU
dc.description.sponsorshipThe Australian Centre for Advanced Photovoltaics (ACAP) encompasses the Australian-based activities of the Australia-US Institute for Advanced Photovoltaics (AUSIAPV) and is supported by the Australian Government through the Australian Renewable Energy Agency (ARENA). We thank the Electron Microscopy Unit and the BioMedical Imaging Facility at UNSW for SEM and fluorescence imaging support. We acknowledge the support of the ANFF ACT Node for EDS measurements.en_AU
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn1932-7447en_AU
dc.identifier.urihttp://hdl.handle.net/1885/248786
dc.language.isoen_AUen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.rights© 2017 American Chemical Societyen_AU
dc.sourceJournal of Physical Chemistry Cen_AU
dc.titleThe Effect of Stoichiometry on the Stability of Inorganic Cesium Lead Mixed-Halide Perovskites Solar Cellsen_AU
dc.typeJournal articleen_AU
local.bibliographicCitation.issue36en_AU
local.bibliographicCitation.lastpage19649en_AU
local.bibliographicCitation.startpage19642en_AU
local.contributor.affiliationMa, Qingshan, University of New South Walesen_AU
local.contributor.affiliationHuang, Shujuan, University of New South Walesen_AU
local.contributor.affiliationChen, Sheng, University of New South Walesen_AU
local.contributor.affiliationZhang, Meng, University of New South Walesen_AU
local.contributor.affiliationLau, Cho Fair Jonathan, University of New South Walesen_AU
local.contributor.affiliationLockrey, Mark, College of Science, ANUen_AU
local.contributor.affiliationMulmudi, Hemant, College of Engineering and Computer Science, ANUen_AU
local.contributor.affiliationShan, Yuchao, Microquanta Semiconductor Co. Ltden_AU
local.contributor.affiliationYao, Jizhong, Microquanta Semiconductor Co. Ltden_AU
local.contributor.affiliationZheng, Jianghui, University of New South Walesen_AU
local.contributor.affiliationDeng, Xiaofan, University of New South Walesen_AU
local.contributor.affiliationCatchpole, Kylie, College of Engineering and Computer Science, ANUen_AU
local.contributor.affiliationGreen, Martin Andrew, University of New South Walesen_AU
local.contributor.affiliationHo-Baillie, Anita, UNSWen_AU
local.contributor.authoremailu9612096@anu.edu.auen_AU
local.contributor.authoruidLockrey, Mark, u1004199en_AU
local.contributor.authoruidMulmudi, Hemant, u1020357en_AU
local.contributor.authoruidCatchpole, Kylie, u9612096en_AU
local.description.embargo2099-12-31
local.description.notesImported from ARIESen_AU
local.identifier.absfor100708 - Nanomaterialsen_AU
local.identifier.absfor090605 - Photodetectors, Optical Sensors and Solar Cellsen_AU
local.identifier.ariespublicationu4351680xPUB132en_AU
local.identifier.citationvolume121en_AU
local.identifier.doi10.1021/acs.jpcc.7606268en_AU
local.identifier.scopusID2-s2.0-85029457252
local.identifier.thomsonID000411171800010
local.identifier.uidSubmittedByu4351680en_AU
local.publisher.urlhttp://pubs.acs.org/en_AU
local.type.statusPublished Versionen_AU

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