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P‐82: Doubling the Light Out Coupling Efficiency of Quantum Dot Light Emitting Diodes
Author(s) -
Zhu Ruidong,
Luo Zhenyue,
Wu ShinTson
Publication year - 2015
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.10013
Subject(s) - light emitting diode , quantum dot , electroluminescence , optoelectronics , diode , optics , materials science , radiation , physics , coupling (piping) , nanotechnology , layer (electronics) , metallurgy
We utilize the dipole model to analyze the light outcoupling and angular radiation pattern of the quantum dot light emitting diodes (QLEDs). Red, green and blue QLEDs are used as examples and the simulation results match well with the experiment. We then confirm that by combining a high refractive index glass substrate with macroextractors, the light outcoupling efficiency can be doubled. And electroluminescent spectra analysis at different angle demonstrates that all three QLEDs have small color shift.