Advanced Materials · 2014 · 303 citations · 28 references
Natural SciencesMaterials EngineeringMaterials ScienceNanomaterialsOptoelectronicsSemiconductor MaterialsLight-emitting DiodesNanostructured Electronic MaterialsOptoelectronic DevicesOptoelectronic MaterialsQuantum DotsSemiconductor NanomaterialsCore-shell Quantum DotsDevice EfficiencyElectroluminescent MaterialsLight-emitting DevicesQuantum Dot DevicesQuantum Dot Light-emitting DiodesQuantum Dot MaterialsSemiconductor Quantum Dots
CdSe/Zn1-X CdX S core/shell heterostructured quantum dots (QDs) with varying shell thicknesses are studied as the active material in a series of electroluminescent devices. "Giant" CdSe/Zn1-X CdX S QDs (e.g., CdSe core radius of 2 nm and Zn1-X CdX S shell thickness of 6.3 nm) demonstrate a high device efficiency (peak EQE = 7.4%) and a record-high brightness (>100 000 cd m(-2) ) of deep-red emission, along with improved device stability.
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