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dc.contributor.author Oh, Jae Taek ko
dc.contributor.author Kim, Dae-Hwan ko
dc.contributor.author Kim, Younghoon ko
dc.date.accessioned 2018-10-30T05:59:50Z -
dc.date.available 2018-10-30T05:59:50Z -
dc.date.created 2018-10-22 -
dc.date.issued 2018-09 -
dc.identifier.citation Journal of Visualized Experiments, v.2018, no.139 -
dc.identifier.issn 1940-087X -
dc.identifier.uri http://hdl.handle.net/20.500.11750/9385 -
dc.description.abstract Bismuth-based hybrid perovskites are regarded as promising photo-active semiconductors for environment-friendly and air-stable solar cell applications. However, poor surface morphologies and relatively high bandgap energies have limited their potential. Silver-bismuth-iodine (Ag-Bi-I) is a promising semiconductor for optoelectronic devices. Therefore, we demonstrate the fabrication of Ag-Bi-I ternary thin films using material solution processing. The resulting thin films exhibit controlled surface morphologies and optical bandgaps according to their thermal annealing temperatures. In addition, it has been reported that Ag-Bi-I ternary systems crystallize to AgBi2I7, Ag2BiI5, etc. according to the ratio of the precursor chemicals. The solution-processed AgBi2I7 thin films exhibit a cubic-phase crystal structure, dense, pinhole-free surface morphologies with grains ranging in size from 200 to 800 nm, and an indirect bandgap of 1.87 eV. The resultant AgBi2I7 thin films show good air stability and energy band diagrams, as well as surface morphologies and optical bandgaps suitable for lead-free and air-stable single-junction solar cells. Very recently, a solar cell with 4.3% power conversion efficiency was obtained by optimizing the Ag-Bi-I crystal compositions and solar cell device architectures. © 2018, Journal of Visualized Experiments. All rights reserved. -
dc.language English -
dc.publisher MYJoVE Corporation -
dc.title Solution-processed"silver-bismuth-iodine" ternary thin films for lead-free photovoltaic absorbers -
dc.type Article -
dc.identifier.doi 10.3791/58286 -
dc.identifier.wosid 000456210900046 -
dc.identifier.scopusid 2-s2.0-85054405685 -
dc.type.local Article(Overseas) -
dc.type.rims ART -
dc.description.journalClass 1 -
dc.contributor.nonIdAuthor Oh, Jae Taek -
dc.identifier.citationVolume 2018 -
dc.identifier.citationNumber 139 -
dc.identifier.citationTitle Journal of Visualized Experiments -
dc.type.journalArticle Article -
dc.description.isOpenAccess N -
dc.contributor.affiliatedAuthor Kim, Dae-Hwan -
dc.contributor.affiliatedAuthor Kim, Younghoon -
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Convergence Research Center for Solar Energy 1. Journal Articles

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