TITLE

Electroluminescence from a single pyramidal quantum dot in a light-emitting diode

AUTHOR(S)
Baier, M.H.; Constantin, C.; Pelucchi, E.; Kapon, E.
PUB. DATE
March 2004
SOURCE
Applied Physics Letters;3/15/2004, Vol. 84 Issue 11, p1967
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on the fabrication of a quantum-dot light-emitting diode (QD-LED), exhibiting electroluminescence from a single, self-formed QD obtained by epitaxial growth on pyramidal recess patterns. Moreover, selective carrier injection through a submicron metal contact and a 20-nm-wide self-formed low potential vertical channel connected to the QD active area is demonstrated, resulting in enhanced injection efficiency. The developed fabrication process offers full flexibility to control the number and position of the emitters down to a single QD in a micron-size compact LED. This makes this system an ideal candidate for efficient, electrically driven single-photon sources for quantum information applications. © 2004 American Institute of Physics.
ACCESSION #
12512663

 

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