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- W3204707069 abstract "Solution-processed planar perovskite light-emitting diodes (LEDs) promise high-performance and cost-effective electroluminescent devices ideal for large-area display and lighting applications. Exploiting emission layers with high ratios of horizontal transition dipole moments (TDMs) is expected to boost the photon outcoupling of planar LEDs. However, LEDs based on anisotropic perovskite nanoemitters remain to be inefficient (external quantum efficiency, EQE <5%) due to the difficulties of simultaneously controlling the orientations of TDMs, achieving high photoluminescence quantum yields (PLQYs) and realizing charge balance in the films of assembled nanostructures. Here, we demonstrate efficient electroluminescence from an in situ grown perovskite film composed of a monolayer of face-on oriented nanoplatelets. The ratio of horizontal TDMs of the perovskite nanoplatelet film is ~84%, which leads to a light-outcoupling efficiency of ~31%, substantially higher than that of isotropic emitters (~23%). In consequence, LEDs with a peak EQE of 23.6% are achieved, representing highly efficient planar perovskite LEDs." @default.
- W3204707069 created "2021-10-11" @default.
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- W3204707069 date "2021-10-08" @default.
- W3204707069 modified "2023-10-04" @default.
- W3204707069 title "Efficient light-emitting diodes based on oriented perovskite nanoplatelets" @default.
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- W3204707069 doi "https://doi.org/10.1126/sciadv.abg8458" @default.
- W3204707069 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8500509" @default.
- W3204707069 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34623917" @default.
- W3204707069 hasPublicationYear "2021" @default.
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