Low-cost, large-scale, ordered ZnO nanopillar arrays for light extraction efficiency enhancement in quantum dot light-emitting diodes
Date
2014Source Title
Proceedings of the Photonics Conference, IEEE 2014
Print ISSN
1092-8081
Publisher
IEEE
Pages
534 - 535
Language
English
Type
Conference PaperItem Usage Stats
199
views
views
171
downloads
downloads
Abstract
We report a QLED with enhanced light outcoupling efficiency by applying a layer of periodic ZnO nanopillar arrays. The resulting QLED reaches the record external quantum efficiency (EQE) of 9.34% in green-emitting QLEDs with a similar device structure.
Keywords
NanopillarQLED
Quantum dots
ZnO
Efficiency
Light emitting diodes
Nanocrystals
Nanostructures
Photonics
Semiconductor quantum dots
Zinc oxide
External quantum efficiency
Light outcoupling
Light-extraction efficiency
Nano-pillar arrays
Quantum-dot light emitting diodes
Quantum efficiency
Permalink
http://hdl.handle.net/11693/27030Published Version (Please cite this version)
http://dx.doi.org/10.1109/IPCon.2014.6995486Collections
Related items
Showing items related by title, author, creator and subject.
-
Electroluminescence efficiency enhancement in quantum dot light-emitting diodes by embedding a silver nanoisland layer
(Wiley-VCH Verlag, 2015)A colloidal quantum dot light-emitting diode (QLED) is reported with substantially enhanced electroluminescence by embedding a thin layer of Ag nanoislands into hole transport layer. The maximum external quantum efficiency ... -
A photometric investigation of ultra-efficient LEDs with high color rendering index and high luminous efficacy employing nanocrystal quantum dot luminophores
(Optical Society of America, 2009-12-24)We report a photometric study of ultra-efficient light emitting diodes (LEDs) that exhibit superior color rendering index (CRI) and luminous efficacy of optical radiation (LER) using semiconductor quantum dot nanocrystal ... -
Colloidal quantum dot light-emitting diodes employing phosphorescent small organic molecules as efficient exciton harvesters
(American Chemical Society, 2014)Nonradiative energy transfer (NRET) is an alternative excitation mechanism in colloidal quantum dot (QD) based electroluminescent devices (QLEDs). Here, we develop hybrid highly spectrally pure QLEDs that facilitate energy ...
