DataVXAdvanced Optical MaterialsPaper
journal article·2015-10Open access

Electroluminescence Efficiency Enhancement in Quantum Dot Light‐Emitting Diodes by Embedding a Silver Nanoisland Layer

Xuyong Yang, Pedro Ludwig Hernandez‐Martinez, Cuong Dang, Evren Mutlugun, Kang Zhang, Hilmi Volkan Demir, Xiao Wei Sun

Advanced Optical Materials· Volume 3· Issue 10
Publisher pageOpen full text
Source abstract

Abstract

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 (EQE) of 7.1% achieved in the present work is the highest efficiency value reported for green‐emitting QLEDs with a similar structure, which corresponds to 46% enhancement compared with the reference device. The relevant mechanisms enabling the EQE enhancement are associated with the near‐field enhancement via an effective coupling between excitons of the quantum dot emitters and localized surface plasmons around Ag nano­islands, which are found to lead to good agreement between the simulation results and the experimental data, providing us with a useful insight important for plasmonic QLEDs.
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Research context

Nanomaterials

OpenAlex topics: Quantum Dots Synthesis And Properties · Nanocluster Synthesis and Applications · Gold and Silver Nanoparticles Synthesis and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Luminous! Center of Excellence for Semiconductor Lighting and Displays School of Electrical and Electronic Engineering Nanyang Technological University Nanyang Avenue Singapore 639798 Singapore

Department of Electrical and Electronics Engineering Abdullah Gul University Kayseri 38039 Turkey

Department of Electrical and Electronics Engineering Department of Physics UNAM – Institute of Materials Science and Nanotechnology Bilkent University Bilkent Ankara 06800 Turkey

School of Physical and Mathematical Sciences Nanyang Technological University Nanyang Avenue Singapore 639798 Singapore

Funding

Singapore National Research Foundation · Science and Engineering Research Council, Agency for Science, Technology and Research (A*STAR) of Singapore

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