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- W3118155474 abstract "We report a five-fold luminance increase of green-light-emitting CdSe@ZnS quantum-dot LEDs (QLEDs) in response to treatment with a 2-ethoxyethanol solution of cesium carbonate (Cs2CO3). The maximum luminous yield of Cs2CO3-treated QLED is as high as 3.41 cd A-1 at 6.4 V. To elucidate device-performance improvement, we model measured currents as the sum of radiative and non-radiative recombination components, which are respectively represented by modified Shockley equations. Variations in model parameters show that a shift in Fermi level, reduction of barrier heights, and passivation of mid-gap defect states are the main results of Cs2CO3 treatment. In spite of a large luminance difference, light-extraction efficiency remains the same at 9% regardless of Cs2CO3 treatment because of the similarity in optical structures." @default.
- W3118155474 created "2021-01-05" @default.
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- W3118155474 date "2021-01-25" @default.
- W3118155474 modified "2023-10-18" @default.
- W3118155474 title "Suppression of non-radiative recombination to improve performance of colloidal quantum-dot LEDs with a Cs<sub>2</sub>CO<sub>3</sub> solution treatment" @default.
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- W3118155474 doi "https://doi.org/10.1088/1361-6528/abd780" @default.
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