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Title
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Achieving high moisture tolerance in pseudohalide perovskite nanocrystals for light-emitting diode application
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Author
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Abstract
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| The addition of potassium thiocyanate (KSCN) to the FAPbBr3 structure and subsequent post-treatment of nanocrystals (NCs) lead to high quantum confinement, resulting in a photoluminescent quantum yield (PLQY) approaching unity and microsecond decay times. This synergistic approach demonstrated exceptional stability under humid conditions, retaining 70% of the PLQY for over a month, while the untreated NCs degrade within 24 h. Additionally, the devices incorporating the post-treated NCs displayed 1.5% external quantum efficiency (EQE), a 5-fold improvement over untreated devices. These results provide promising opportunities for the use of perovskites in moisture-stable optoelectronics. |
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Language
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English
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Source (journal)
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ACS applied optical materials
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Publication
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2023
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DOI
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10.1021/ACSAOM.3C00096
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Volume/pages
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1
:6
(2023)
, p. 1184-1191
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Full text (Publisher's DOI)
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Full text (open access)
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Full text (publisher's version - intranet only)
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