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Hybrid Quantum Dot Light-Emitting Diodes for White Emission Using Blue Phosphorescent Organic Molecules and Red Quantum Dots

Department of Advanced Materials Engineering, Kyonggi University, Suwon 16227, Korea
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Micromachines 2019, 10(9), 609; https://doi.org/10.3390/mi10090609
Received: 30 August 2019 / Revised: 11 September 2019 / Accepted: 13 September 2019 / Published: 14 September 2019
(This article belongs to the Special Issue Flexible/Transparent Optoelectronic Devices for Wearable Application)
Hybrid quantum dot light-emitting diodes (QLEDs) with no buffer layer were developed to achieve white emission using red quantum dots by spin-coating, and blue phosphorescent organic molecules by thermal evaporation. These unique bichromatic devices exhibit two distinct electroluminescent peaks with similar intensities at 10.5 V. For white emission, these hybrid QLEDs present a maximum luminance of 6195 cd/m2 and a current efficiency of 2.02 cd/A. These results indicate that the unique double emission layers have the potential for bright and efficient white devices using fewer materials. View Full-Text
Keywords: quantum dots; phosphorescent molecules; white emission quantum dots; phosphorescent molecules; white emission
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Moon, A.; Kim, J. Hybrid Quantum Dot Light-Emitting Diodes for White Emission Using Blue Phosphorescent Organic Molecules and Red Quantum Dots. Micromachines 2019, 10, 609.

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