3‐4: Highly Efficient Green Top‐Emission Light‐Emitting Diodes Based on Indium‐Phosphide Quantum Dots
SID Symposium Digest of Technical Papers(2022)
Abstract
One of the major challenges for novel display technologies based on quantum dot light‐emitting (QLED) was replacing toxic emission layers. Indium phosphide (InP) quantum dots were considered as the most promising alternative materials. In this work, the optimal vertical light extraction could be obtained by simulating the different thickness of electron transport layer (ETL) in devices. The Mg‐doped ZnO (ZnMgO) electron transport layer was adopted to further balance the carriers injection and transport. Finally, top‐emission devices with optimized light extraction and balanced carriers shown higher current efficiency and narrower full width at half maximum (FWHM) of electroluminescent peaks (EL).
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Key words
diodes,top‐emission,dots
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