{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T17:44:37Z","timestamp":1791395077602,"version":"4.3.3"},"reference-count":56,"publisher":"American Chemical Society (ACS)","issue":"30","license":[{"start":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T00:00:00Z","timestamp":1784592000000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T00:00:00Z","timestamp":1784592000000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2026,7,21]],"date-time":"2026-07-21T00:00:00Z","timestamp":1784592000000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-045"}],"funder":[{"DOI":"10.13039\/100014234","name":"Molecular Engineering and Sciences Institute, University of Washington","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100014234","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100023581","name":"National Science Foundation Graduate Research Fellowship Program","doi-asserted-by":"publisher","award":["DGE-2140004"],"award-info":[{"award-number":["DGE-2140004"]}],"id":[{"id":"10.13039\/100023581","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100001906","name":"Washington Research Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100001906","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100022627","name":"Fulbright U.S. Scholar Program","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100022627","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100007255","name":"ISEF Foundation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100007255","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100009037","name":"Clean Energy Institute","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100009037","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100005385","name":"Council for Higher Education","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100005385","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["DMR-2308979"],"award-info":[{"award-number":["DMR-2308979"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["NNCI-1542101"],"award-info":[{"award-number":["NNCI-1542101"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000001","name":"National Science Foundation","doi-asserted-by":"publisher","award":["NNCI-2025489"],"award-info":[{"award-number":["NNCI-2025489"]}],"id":[{"id":"10.13039\/100000001","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000078","name":"Division of Materials Research","doi-asserted-by":"publisher","award":["DMR-2404703"],"award-info":[{"award-number":["DMR-2404703"]}],"id":[{"id":"10.13039\/100000078","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Zuckerman STEM Leadership Program"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,5]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Three-dimensional (3D) iodide double-perovskite (elpasolite) semiconductors have attracted interest as potential lead-free metal-halide absorber layers for solar applications. Although studied extensively by computational methods, they have remained largely inaccessible synthetically, consistent with their predicted thermodynamic instability. Here, we report the first synthesis of bulk Cs2AgBiI6, demonstrating both microcrystalline and thin-film forms. Microcrystalline powders of Cs2AgBiI6 were prepared via anion exchange from phase-pure Cs2AgBiBr6 microcrystals. The resulting iodide elpasolite shows broad absorption throughout the visible with a 1.70 \u00b1 0.05 eV optical bandgap and near-infrared photoluminescence centered at 1.03 eV. We identify the elimination of trace moisture in bulk Cs2AgBiBr6 as the critical factor enabling complete halide exchange and isolation of bulk Cs2AgBiI6 with phase purity. In inert atmosphere, microcrystalline Cs2AgBiI6 shows no decomposition when stored for months at room temperature or heated to \u223c70 \u00b0C, and it appears equally stable in dry air. Building upon these insights, we then demonstrate the preparation of phase-pure Cs2AgBiI6 films by flash thermal evaporation of Cs2AgBiBr6 followed by anion exchange. Photoconductivity measurements on such Cs2AgBiI6 films demonstrate photocarrier generation and transport, marking the first optoelectronic measurement on this elusive 3D iodide double perovskite.<\/jats:p>","DOI":"10.1021\/jacs.6c08152","type":"journal-article","created":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T00:24:38Z","timestamp":1784679878000},"page":"32279-32288","source":"Crossref","is-referenced-by-count":1,"title":["Synthesis\nof the Elusive Bulk Iodide Double-Perovskite\nSemiconductor, Cs2AgBiI6: Microcrystals and\nPhotoconductive Films"],"prefix":"10.1021","volume":"148","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8333-525X","authenticated-orcid":true,"given":"Faris","family":"Horani","sequence":"first","affiliation":[{"name":"University of Washington , , , ,","place":["Seattle, Washington, United States, 98195-1700"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicolas","family":"Nguyen","sequence":"additional","affiliation":[{"name":"University of Washington , , , ,","place":["Seattle, Washington, United States, 98195-1700"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carmelita","family":"Ro-Mendez","sequence":"additional","affiliation":[{"name":"University of Washington , , , ,","place":["Seattle, Washington, United States, 98195-1700"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nicholas J.","family":"Adams","sequence":"additional","affiliation":[{"name":"University of Washington , , , ,","place":["Seattle, Washington, United States, 98195-1700"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2888-9916","authenticated-orcid":true,"given":"Daniel R.","family":"Gamelin","sequence":"additional","affiliation":[{"name":"University of Washington , , , ,","place":["Seattle, Washington, United States, 98195-1700"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,7,21]]},"reference":[{"key":"2026080511095326500_cit1","doi-asserted-by":"publisher","first-page":"745","DOI":"10.1126\/science.aam7093","article-title":"Properties and Potential Optoelectronic\nApplications of Lead Halide Perovskite Nanocrystals","volume":"358","author":"Kovalenko","year":"2017","journal-title":"Science"},{"key":"2026080511095326500_cit2","doi-asserted-by":"publisher","first-page":"19972","DOI":"10.1039\/C7TA06816F","article-title":"Highly Stable,\nPhase Pure Cs2AgBiBr6 Double Perovskite Thin\nFilms for Optoelectronic Applications","volume":"5","author":"Greul","year":"2017","journal-title":"J. Mater.\nChem. A"},{"key":"2026080511095326500_cit3","doi-asserted-by":"publisher","first-page":"2138","DOI":"10.1021\/jacs.5b13294","article-title":"A Bismuth-Halide\nDouble Perovskite with Long Carrier Recombination Lifetime for Photovoltaic\nApplications","volume":"138","author":"Slavney","year":"2016","journal-title":"J. Am. Chem. Soc."},{"key":"2026080511095326500_cit4","doi-asserted-by":"publisher","first-page":"1348","DOI":"10.1021\/acs.chemmater.5b04231","article-title":"Cs2AgBiX6 (X = Br, Cl): New Visible Light Absorbing,\nLead-Free Halide\nPerovskite Semiconductors","volume":"28","author":"McClure","year":"2016","journal-title":"Chem. Mater."},{"key":"2026080511095326500_cit5","doi-asserted-by":"publisher","first-page":"3621","DOI":"10.1039\/C9QI00905A","article-title":"Double Perovskite Cs2AgInCl6:Cr3+: Broadband and Near-Infrared\nLuminescent Materials","volume":"6","author":"Zhao","year":"2019","journal-title":"Inorg. Chem. Front."},{"key":"2026080511095326500_cit6","doi-asserted-by":"publisher","first-page":"11696","DOI":"10.1002\/anie.202011833","article-title":"Lead-Free Double Perovskite Cs2AgInCl6","volume":"60","author":"Liu","year":"2021","journal-title":"Angew. Chem., Int.\nEd."},{"key":"2026080511095326500_cit7","doi-asserted-by":"publisher","first-page":"726","DOI":"10.1038\/s41566-017-0012-4","article-title":"Cs2AgBiBr6 Single-Crystal X-Ray Detectors with\na Low Detection Limit","volume":"11","author":"Pan","year":"2017","journal-title":"Nat. Photonics"},{"key":"2026080511095326500_cit8","doi-asserted-by":"publisher","first-page":"10222","DOI":"10.1021\/jp002132k","article-title":"Excited-State\nDynamics and Sequential Two-Photon Upconversion\nExcitation of Mo3+-Doped Chloro- and Bromo-Elpasolites","volume":"104","author":"Gamelin","year":"2000","journal-title":"J. Phys. Chem. B"},{"key":"2026080511095326500_cit9","doi-asserted-by":"publisher","first-page":"4280","DOI":"10.1063\/1.451801","article-title":"Broadband\nNear-Infrared Luminescence of Cr+3 in the Elpasolite Lattices\nCs2NaInCl6, Cs2NaYCl6,\nand Cs2NaYBr6","volume":"85","author":"Knochenmuss","year":"1986","journal-title":"J. Chem.\nPhys."},{"key":"2026080511095326500_cit10","doi-asserted-by":"publisher","first-page":"2300277","DOI":"10.1002\/adom.202300277","article-title":"Lanthanide\nDouble Perovskite Nanocrystals\nwith Emissions Covering the UV-C to NIR Spectral Range","volume":"11","author":"Saghy","year":"2023","journal-title":"Adv. Opt. Mater."},{"key":"2026080511095326500_cit11","doi-asserted-by":"publisher","first-page":"1254","DOI":"10.1021\/acs.jpclett.6b00376","article-title":"Lead-Free\nHalide Double Perovskites\nvia Heterovalent Substitution of Noble Metals","volume":"7","author":"Volonakis","year":"2016","journal-title":"J. Phys. Chem. Lett."},{"key":"2026080511095326500_cit12","doi-asserted-by":"publisher","first-page":"158","DOI":"10.1021\/acs.jpcc.7b10370","article-title":"Phase Diagrams and\nStability of Lead-Free Halide Double Perovskites Cs2BB\u2032X6: B = Sb and Bi, B\u2032 = Cu, Ag, and Au, and X = Cl, Br,\nand I","volume":"122","author":"Filip","year":"2018","journal-title":"J. Phys. Chem. C"},{"key":"2026080511095326500_cit13","doi-asserted-by":"publisher","DOI":"10.1126\/sciadv.aav0693","article-title":"New Tolerance Factor to Predict the\nStability of Perovskite Oxides and Halides","volume":"5","author":"Bartel","year":"2019","journal-title":"Sci. Adv."},{"key":"2026080511095326500_cit14","doi-asserted-by":"publisher","first-page":"11756","DOI":"10.1021\/acs.jpcc.1c02870","article-title":"Why Are\nDouble Perovskite Iodides\nso Rare?","volume":"125","author":"Vishnoi","year":"2021","journal-title":"J. Phys. Chem. 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Ed."},{"key":"2026080511095326500_cit18","doi-asserted-by":"publisher","first-page":"747","DOI":"10.1021\/ja02181a014","article-title":"The Double\nAuric Iodides of Substituted Ammonium Bases","volume":"36","author":"Gupta","year":"1914","journal-title":"J. Am. Chem. Soc."},{"key":"2026080511095326500_cit19","doi-asserted-by":"publisher","first-page":"663","DOI":"10.1107\/S0108270197000279","article-title":"A Three-Dimensional\nIodo-Bridged\nMixed-Valence Gold(I,III) Compound, Cs2AuIAuIIIII6","volume":"53","author":"Matsushita","year":"1997","journal-title":"Acta Crystallogr.\nSect. C Cryst. Struct. Commun."},{"key":"2026080511095326500_cit20","doi-asserted-by":"publisher","first-page":"245109","DOI":"10.1103\/PhysRevB.89.245109","article-title":"Bandgap\nClosure and\nReopening in CsAuI3 at High Pressure","volume":"89","author":"Wang","year":"2014","journal-title":"Phys. Rev. B:Condens. Matter"},{"key":"2026080511095326500_cit21","doi-asserted-by":"publisher","first-page":"1478","DOI":"10.1039\/D0CC06922A","article-title":"Spontaneous Anion-Exchange Synthesis of Optically Active Mixed-Valence\nCs2Au2I6 Perovskites from Layered\nCsAuCl4 Perovskites","volume":"57","author":"Bhawna","year":"2021","journal-title":"Chem. Commun."},{"key":"2026080511095326500_cit22","doi-asserted-by":"publisher","first-page":"743","DOI":"10.1016\/0038-1098(90)90162-5","article-title":"Semiconductor-to-Metal\nand Metal-to-Metal Transitions in the Three-Dimensional Mixed-Valence\nCompound Cs2Au2I6 under High Pressures","volume":"73","author":"Kojima","year":"1990","journal-title":"Solid State Commun."},{"key":"2026080511095326500_cit23","doi-asserted-by":"publisher","first-page":"11368","DOI":"10.1021\/ja00104a016","article-title":"Phase\nDiagram and Gold Valence State of the Perovskite-Type Mixed-Valence\nCompounds Cs2Au2X6 (X = Cl, Br, and\nI) under High Pressures","volume":"116","author":"Kojima","year":"1994","journal-title":"J. Am. Chem. Soc."},{"key":"2026080511095326500_cit24","doi-asserted-by":"publisher","first-page":"7925","DOI":"10.1103\/PhysRevB.59.7925","article-title":"Electronic\nStructure of the Gold Complexes Cs2Au2X6 (X = I, Br, and Cl)","volume":"59","author":"Liu","year":"1999","journal-title":"Phys. Rev. B:Condens.\nMatter"},{"key":"2026080511095326500_cit25","doi-asserted-by":"publisher","first-page":"1445","DOI":"10.1246\/bcsj.73.1445","article-title":"Gold Valence\nTransition and Phase Diagram in the Mixed-Valence Complexes, M2[Au(I)X2][Au(III)X4] (M = Rb, Cs; X = Cl, Br, and I)","volume":"73","author":"Kojima","year":"2000","journal-title":"Bull. Chem.\nSoc. Jpn."},{"key":"2026080511095326500_cit26","doi-asserted-by":"publisher","first-page":"054104","DOI":"10.1103\/PhysRevB.87.054104","article-title":"Pressure-Induced\nSymmetry Breaking\nin Tetragonal CsAuI3","volume":"87","author":"Wang","year":"2013","journal-title":"Phys. Rev.\nB - Condens. Matter Mater. Phys."},{"key":"2026080511095326500_cit27","doi-asserted-by":"publisher","first-page":"6318","DOI":"10.1021\/acs.chemmater.0c00345","article-title":"Direct Band Gap Mixed-Valence\nOrganic-Inorganic Gold\nPerovskite as Visible Light Absorbers","volume":"32","author":"Ghosh","year":"2020","journal-title":"Chem.\nMater."},{"key":"2026080511095326500_cit28","doi-asserted-by":"publisher","first-page":"1707001","DOI":"10.1002\/adma.201707001","article-title":"Mixed Valence\nPerovskite Cs2Au2I6: A Potential\nMaterial for Thin-Film Pb-Free Photovoltaic Cells with\nUltrahigh Efficiency","volume":"30","author":"Debbichi","year":"2018","journal-title":"Adv. Mater."},{"key":"2026080511095326500_cit29","doi-asserted-by":"publisher","first-page":"014005","DOI":"10.1103\/PhysRevApplied.13.014005","article-title":"Optoelectronic Properties\nand Defect Physics of Lead-Free Photovoltaic Absorbers Cs2AuIAuIIIX6 (X= I, Br)","volume":"13","author":"Kangsabanik","year":"2020","journal-title":"Phys. Rev. Appl."},{"key":"2026080511095326500_cit30","doi-asserted-by":"publisher","first-page":"10197","DOI":"10.1039\/C8TC03496F","article-title":"Two-Dimensional Optical Excitations\nin the Mixed-Valence Cs2Au2I6 Fully\nInorganic Double Perovskite","volume":"6","author":"Giorgi","year":"2018","journal-title":"J. Mater. Chem.\nC"},{"key":"2026080511095326500_cit31","doi-asserted-by":"publisher","first-page":"2419","DOI":"10.1039\/C8SE00154E","article-title":"Design of a Novel and\nHighly Stable Lead-Free Cs2NaBiI6 Double Perovskite\nfor Photovoltaic Application","volume":"2","author":"Zhang","year":"2018","journal-title":"Sustain. Energy\nFuels"},{"key":"2026080511095326500_cit32","doi-asserted-by":"publisher","first-page":"1118","DOI":"10.1021\/acs.nanolett.7b04659","article-title":"Colloidal Nanocrystals\nof Lead-Free Double-Perovskite (Elpasolite) Semiconductors: Synthesis\nand Anion Exchange to Access New Materials","volume":"18","author":"Creutz","year":"2018","journal-title":"Nano Lett."},{"key":"2026080511095326500_cit33","doi-asserted-by":"publisher","first-page":"16552","DOI":"10.1021\/jacs.5c03942","article-title":"Cs2AgSbI6 Nanocrystals: A New\nAir-Stable Iodide Double-Perovskite (Elpasolite) Semiconductor","volume":"147","author":"Horani","year":"2025","journal-title":"J. Am. Chem. Soc."},{"key":"2026080511095326500_cit34","doi-asserted-by":"publisher","first-page":"5699","DOI":"10.1021\/acs.chemmater.3c01511","article-title":"Structure and Stability\nof the Iodide Elpasolite, Cs2AgBiI6","volume":"35","author":"Kluherz","year":"2023","journal-title":"Chem. Mater."},{"key":"2026080511095326500_cit35","doi-asserted-by":"publisher","first-page":"8129","DOI":"10.1021\/acs.chemmater.0c01255","article-title":"Halide\nMixing and Phase Segregation in Cs2AgBiX6 (X\n= Cl, Br, and I) Double Perovskites from Cesium-133 Solid-State NMR\nand Optical Spectroscopy","volume":"32","author":"Kubicki","year":"2020","journal-title":"Chem. Mater."},{"key":"2026080511095326500_cit36","doi-asserted-by":"publisher","first-page":"14767","DOI":"10.1021\/acs.jpcc.4c04453","article-title":"Halide Mixing\nin Cs2AgBi(IxBr1-x)6 Double Perovskites: A\nPathway to Tunable Excitonic Properties","volume":"128","author":"Biega","year":"2024","journal-title":"J.\nPhys. Chem. C"},{"key":"2026080511095326500_cit37","doi-asserted-by":"publisher","first-page":"4507","DOI":"10.1002\/cssc.202101146","article-title":"Mixed-Halide\nDouble Perovskite Cs2AgBiX6 (X = Br, I) with\nTunable Optical Properties\nvia Anion Exchange","volume":"14","author":"Wu","year":"2021","journal-title":"ChemSusChem"},{"key":"2026080511095326500_cit38","doi-asserted-by":"publisher","first-page":"4887","DOI":"10.1021\/acs.chemmater.8b02100","article-title":"Anion Exchange\nin\nCesium Lead Halide Perovskite Nanocrystals and Thin Films Using Trimethylsilyl\nHalide Reagents","volume":"30","author":"Creutz","year":"2018","journal-title":"Chem. Mater."},{"key":"2026080511095326500_cit39","doi-asserted-by":"publisher","first-page":"22364","DOI":"10.1021\/jacs.6c07190","article-title":"Lead-Free\nDouble Cs2Ag(Bi,Sb)(Br,I)6 Perovskites: Going\nbelow 1.8 eV Bandgap by Anion Exchange and Solid-State Reactions","volume":"148","author":"Stroyuk","year":"2026","journal-title":"J. Am. Chem. Soc."},{"key":"2026080511095326500_cit40","doi-asserted-by":"publisher","first-page":"477","DOI":"10.1007\/BF01507527","article-title":"Die Gesetze\nDer Krystallochemie","volume":"14","author":"Goldschmidt","year":"1926","journal-title":"Naturwissenschaften"},{"key":"2026080511095326500_cit41","doi-asserted-by":"publisher","first-page":"751","DOI":"10.1107\/S0567739476001551","article-title":"Revised\nEffective Ionic Radii and Systematic Studies of Interatomic Distances\nin Halides and Chalcogenides","volume":"32","author":"Shannon","year":"1976","journal-title":"Acta Crystallogr.\nA"},{"key":"2026080511095326500_cit42","doi-asserted-by":"publisher","first-page":"187","DOI":"10.1021\/j100696a034","article-title":"Dipole Polarizabilities\nof Ions in Alkali Halide Crystals","volume":"74","author":"Wilson","year":"1970","journal-title":"J. Phys.\nChem."},{"key":"2026080511095326500_cit43","doi-asserted-by":"publisher","first-page":"413","DOI":"10.1039\/C1CS15171A","article-title":"Mechanochemistry: Opportunities\nfor New and Cleaner Synthesis","volume":"41","author":"James","year":"2012","journal-title":"Chem. Soc. Rev."},{"key":"2026080511095326500_cit44","doi-asserted-by":"publisher","first-page":"44","DOI":"10.1021\/ic50203a010","article-title":"Low-Frequency Vibrational Spectra of Bromo- and Iodobismuthates\nand the Observation of a Trans Effect","volume":"19","author":"Laane","year":"1980","journal-title":"Inorg.\nChem."},{"key":"2026080511095326500_cit45","doi-asserted-by":"publisher","first-page":"7982","DOI":"10.1039\/C8TC02305K","article-title":"High-Efficiency and Air-Stable Photodetectors\nBased on Lead-Free\nDouble Perovskite Cs2AgBiBr6 Thin Films","volume":"6","author":"Lei","year":"2018","journal-title":"J. Mater. Chem. C"},{"key":"2026080511095326500_cit46","doi-asserted-by":"publisher","first-page":"1700759","DOI":"10.1002\/advs.201700759","article-title":"The Dawn of Lead-Free\nPerovskite Solar Cell: Highly\nStable Double Perovskite Cs2AgBiBr6 Film","volume":"5","author":"Wu","year":"2018","journal-title":"Adv. Sci."},{"key":"2026080511095326500_cit47","doi-asserted-by":"publisher","first-page":"8481","DOI":"10.1088\/0953-8984\/14\/36\/307","article-title":"Scintillation and Spectroscopy of the Pure and Ce3+-Doped Elpasolites: Cs2LiYX6 (X = Cl,\nBr)","volume":"14","author":"van Loef","year":"2002","journal-title":"J. Phys.: Condens. Matter"},{"key":"2026080511095326500_cit48","doi-asserted-by":"publisher","first-page":"333","DOI":"10.1109\/TNS.2010.2098045","article-title":"Selected Properties of Cs2LiYCl6, Cs2LiLaCl6, and Cs2LiLaBr6 Scintillators","volume":"58","author":"Glodo","year":"2011","journal-title":"IEEE Trans.\nNucl. 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Lett."},{"key":"2026080511095326500_cit51","doi-asserted-by":"publisher","first-page":"949","DOI":"10.1021\/acsenergylett.6b00471","article-title":"Can Pb-Free\nHalide Double Perovskites\nSupport High-Efficiency Solar Cells?","volume":"1","author":"Savory","year":"2016","journal-title":"ACS Energy\nLett."},{"key":"2026080511095326500_cit52","doi-asserted-by":"publisher","first-page":"11435","DOI":"10.1021\/jacs.9b06055","article-title":"Kinetically\nStable Single Crystals of Perovskite-Phase\nCsPbI3","volume":"141","author":"Straus","year":"2019","journal-title":"J. Am. Chem. Soc."},{"key":"2026080511095326500_cit53","doi-asserted-by":"publisher","first-page":"19654","DOI":"10.1039\/D5TC01126D","article-title":"Mapping the Polymorphic\nPhase Transformations\nof CsPbI3 Perovskite Thin Films","volume":"13","author":"Holley","year":"2025","journal-title":"J. Mater. Chem. 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