Scientific Reports · 2020 · 27 citations · 19 references
EngineeringMaterials EngineeringMaterials ScienceOptoelectronicsPhotonicsThin FilmsLight-emitting DiodesOptoelectronic DevicesQuantum DotsSemiconductor NanomaterialsSemiconductor Thin FilmsThin-film DepositionCurrent EfficiencyElectrohydrodynamic FlowFabricationLuminanceMaterial Consumption ControlQuantum Dot DevicesQuantum Dot Light-emitting DiodesQuantum Dot Materials
Abstract A novel electrohydrodynamic (EHD) electrospray coating mechanism was proposed for the continuous fabrication of large-area quantum dot (QD) thin films for high-performance light-emitting diodes (LEDs). The size of QD droplets was systemically controlled using the stable EHD electrospray mode from a mixed solvent, which is a crucial factor for the formation of large and smooth QD thin films. The minimum amount of material consumption was achieved during the process by applying the unique coating system. A QD-LED device based on electrodeposited QDs showed a maximum luminance of 12,082 cd m −2 , maximum current efficiency of nearly 4.0 cd A −1 , and maximum EQE of 1.86%. This system demonstrates not only high reproducibility but could also pave the way for commercializing high-quality QD-LED devices.
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Full-colour quantum dot displays fabricated by transfer printing
Tae‐Ho Kim, Kyung-Sang Cho, Eun Kyung Lee et al. · Nature Photonics · 2011 · 1.2K citations
Natural Sciences, Materials Engineering, Materials Science +14