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Proceedings Paper

Sub-wavelength Si-based plasmonic light emitting tunnel junction
Author(s): Hasan Goktas; Volker J. Sorger
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Paper Abstract

Here we report the effect a metal grating on the light emission enhancement of a light emitting tunnel junction (LETJ). The device utilizes the finite probability of tunneling electrons to scatter inelastically, i.e. emit a photon over a phonon. Here a Fermi sea was electrically biased against the conduction band of a doped semiconductor. While functional, the external emission efficiency is low due to high absorption from the top metal. Here we experimentally show that introducing a grating to this top metal layer will enhance the emission intensity. Additional simulation results provide inside into the light-coupling process. Our result show a 12 times enhancement.

Paper Details

Date Published: 22 December 2015
PDF: 6 pages
Proc. SPIE 9668, Micro+Nano Materials, Devices, and Systems, 96684L (22 December 2015); doi: 10.1117/12.2202439
Show Author Affiliations
Hasan Goktas, The George Washington Univ. (United States)
Volker J. Sorger, The George Washington Univ. (United States)

Published in SPIE Proceedings Vol. 9668:
Micro+Nano Materials, Devices, and Systems
Benjamin J. Eggleton; Stefano Palomba, Editor(s)

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