Quantum Dot Light-Emitting Diodes Employing Phosphorescent Organic Molecules as Double Emission Layers
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This work presents hybrid quantum dot light-emitting diodes with double emission layers. Blue quantum dots were deposited by spin-coating for the first emission layer. Then, for the second emission layer, red phosphorescent organic molecules, Ir(piq)3, were deposited by thermal evaporation without host materials. These unique bichromatic devices showed two distinct electroluminescent (EL) peaks with similar intensities at 10 V; then, the variation of the EL spectra with applied voltage was investigated systematically. The findings of this study demonstrate the potential for white EL devices using fewer materials in the near future.
KeywordsQuantum dots QLEDs Phosphorescent organic molecules Hybrid structure
This work was supported by Kyonggi University Research Grant 2016.