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Proceedings Paper

Optoelectronic and transport properties of nanocolumnar InGaN/GaN quantum disk LEDs
Author(s): F. Sacconi; G. Penazzi; A. Pecchia; M. Auf der Maur; A. Di Carlo
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Paper Abstract

In this work we use the multi-scale software tool TiberCAD to study the transport and optical properties of InGaN quantum disk (QD) - based GaN nanocolumn p-i-n diode structures. IV characteristics have been calculated for several values of In concentration in the QD and of nanocolumn width. Strain maps show a clear relaxation effect close to the column boundaries, which tends to vanish for the larger columns. Effects of strain and polarization fields on the electron and hole states in the QD are shown, together with the dependence of optical emission spectra on geometrical and material parameters.

Paper Details

Date Published: 26 February 2010
PDF: 10 pages
Proc. SPIE 7597, Physics and Simulation of Optoelectronic Devices XVIII, 75970D (26 February 2010); doi: 10.1117/12.840533
Show Author Affiliations
F. Sacconi, Univ. degli Studi di Roma Tor Vergata (Italy)
G. Penazzi, Univ. degli Studi di Roma Tor Vergata (Italy)
A. Pecchia, Univ. degli Studi di Roma Tor Vergata (Italy)
M. Auf der Maur, Univ. degli Studi di Roma Tor Vergata (Italy)
A. Di Carlo, Univ. degli Studi di Roma Tor Vergata (Italy)


Published in SPIE Proceedings Vol. 7597:
Physics and Simulation of Optoelectronic Devices XVIII
Bernd Witzigmann; Fritz Henneberger; Yasuhiko Arakawa; Marek Osinski, Editor(s)

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