Retracted: Electrically Excited Plasmonic Ultraviolet Light Sources

The emission of photons from metal‐insulator‐metal (MIM) nanojunctions through inelastic tunneling of electrically driven electrons is a well‐acknowledged approach to develop miniaturized light sources and ultradense photonic instruments. Generally, the existing research in the optimization of elect...

Full description

Saved in:
Bibliographic Details
Published in:Small (Weinheim an der Bergstrasse, Germany) Germany), 2021-06, Vol.17 (24)
Main Author: Ahmadivand, Arash
Format: Article
Language:English
Subjects:
Aluminum
Electrical junctions
Electron density
Light
Light emission
Light sources
Nanotechnology
Noble metals
Optimization
Plasmons
Ultraviolet radiation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The emission of photons from metal‐insulator‐metal (MIM) nanojunctions through inelastic tunneling of electrically driven electrons is a well‐acknowledged approach to develop miniaturized light sources and ultradense photonic instruments. Generally, the existing research in the optimization of electromigrated tunneling junctions is principally centered on the generation of visible and near‐infrared lights. This study reports on the near‐ultraviolet (NUV, λ ≈ 355 nm) light emission from enhanced tunneling of electrons using aluminum nanoelectrodes. Compared to conventional noble metals, the high electron density and low screening of aluminum enable supporting of pronounced local fields at high energies (i.e, ultraviolet (UV)). As the color of light can be straightforwardly determined by the properties of tunneling structures, the exquisite features of aluminum have empowered the fashioning of tunneling devices that are able to effectively sustain plasmons at short wavelengths and emit UV light with high photon yield. This demonstration is a breakthrough in the generation of high‐energy beams using electrically excited aluminum tunneling platforms, which promisingly accelerates the implementation of electrically tunable and ultradense UV light sources.
ISSN:1613-6810
1613-6829
DOI:10.1002/smll.202100819