(NH4)2AgX3 (X = Br, I): 1D Silver Halides with Broadband White Light Emission and Improved Stability

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dc.contributor.authorCreason, Tielyr D.
dc.contributor.authorFattal, Hadiah
dc.contributor.authorGilley, Isaiah W.
dc.contributor.authorMcWhorter, Timothy M.
dc.contributor.authorDu, Mao-Hua
dc.contributor.authorSaparov, Bayram
dc.date.accessioned2021-06-25T19:21:53Z
dc.date.available2021-06-25T19:21:53Z
dc.date.issued2021-06-17
dc.description.abstractRecently, ternary copper(I) halides have emerged as alternatives to lead halide perovskites for light emission applications. Despite their high-efficiency photoluminescence (PL) properties, most copper(I) halides are blue emitters with unusually poor tunability of their PL properties. Here, we report the impact of substitution of copper with silver in the high-efficiency blue-emitting Cu(I) halides through hydrothermal synthesis and characterization of (NH4)2AgX3 (X = Br, I). (NH4)2AgX3 are found to exhibit contrasting light emission properties compared to the blue-emitting Cu(I) analogues. Thus, (NH4)2AgBr3 and (NH4)2AgI3 exhibit broadband whitish light emission at room temperature with PL maxima at 394 and 534 nm and full width at half-maximum values of 142 and 114 nm, respectively. Based on our combined experimental and computational results, the broadband emission in (NH4)2AgX3 is attributed to the presence of high-stability self-trapped excitons and defect-bound excitons. (NH4)2AgBr3 and (NH4)2AgI3 both have significantly improved air and moisture stability as compared to the related copper(I) halides, which are prone to degradation via oxidation. Our results suggest that silver halides should be considered alongside their copper analogues for high-efficiency light emission applications.en_US
dc.description.peerreviewYesen_US
dc.description.sponsorshipThis material is based upon work supported by the National Aeronautics and Space Administration under Agreement No.80NSSC19M0140 issued through NASA Oklahoma EPSCoR.M.-H.D. was supported by the U.S. Department of Energy,Office of Science, Basic Energy Sciences, Materials Sciences,and Engineering Division. Open Access fees paid for in whole or in part by the University of Oklahoma Libraries.en_US
dc.identifier.citationACS Mater. Au 2021, XXXX, XXX, XXX-XXX. https://doi.org/10.1021/acsmaterialsau.1c00011en_US
dc.identifier.doi10.1021/acsmaterialsau.1c00009en_US
dc.identifier.urihttps://hdl.handle.net/11244/330094
dc.languageen_USen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectInorganic compoundsen_US
dc.subjectCrystal structureen_US
dc.subjectLighten_US
dc.subjectSilveren_US
dc.subjectHalogensen_US
dc.subjectPhotoluminescenceen_US
dc.subjectLead−free halidesen_US
dc.subjectSilver halidesen_US
dc.subjectLight emissionen_US
dc.subjectSTEen_US
dc.title(NH4)2AgX3 (X = Br, I): 1D Silver Halides with Broadband White Light Emission and Improved Stabilityen_US
dc.typeArticleen_US
ou.groupCollege of Arts and Sciences::Department of Chemistry and Biochemistryen_US

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