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Electroluminescence in Single Layer MoS2

Sundaram, R. S. and Engel, M. and Lombardo, A. and Krupke, R. and Ferrari, A. C. and Avouris, Ph. and Steiner, M. (2013):
Electroluminescence in Single Layer MoS2.
13, In: Nano Letters, (4), ACS Publications, pp. 1416-1421, ISSN 1530-6984, [Online-Edition: http://dx.doi.org/10.1021/nl400516a],
[Article]

Abstract

We detect electroluminescence in single layer molybdenum disulfide (MoS2) field-effect transistors built on transparent glass substrates. By comparing the absorption, photoluminescence, and electroluminescence of the same MoS2 layer, we find that they all involve the same excited state at 1.8 eV. The electroluminescence has pronounced threshold behavior and is localized at the contacts. The results show that single layer MoS2, a direct band gap semiconductor, could be promising for novel optoelectronic devices, such as two-dimensional light detectors and emitters.

Item Type: Article
Erschienen: 2013
Creators: Sundaram, R. S. and Engel, M. and Lombardo, A. and Krupke, R. and Ferrari, A. C. and Avouris, Ph. and Steiner, M.
Title: Electroluminescence in Single Layer MoS2
Language: English
Abstract:

We detect electroluminescence in single layer molybdenum disulfide (MoS2) field-effect transistors built on transparent glass substrates. By comparing the absorption, photoluminescence, and electroluminescence of the same MoS2 layer, we find that they all involve the same excited state at 1.8 eV. The electroluminescence has pronounced threshold behavior and is localized at the contacts. The results show that single layer MoS2, a direct band gap semiconductor, could be promising for novel optoelectronic devices, such as two-dimensional light detectors and emitters.

Journal or Publication Title: Nano Letters
Volume: 13
Number: 4
Publisher: ACS Publications
Uncontrolled Keywords: MoS2, photoluminescence, electroluminescence, photocurrent microscopy, nano-optics
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Fachgebiet Molekulare Nanostrukturen
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences
Date Deposited: 21 Oct 2013 12:35
Official URL: http://dx.doi.org/10.1021/nl400516a
Identification Number: doi:10.1021/nl400516a
Funders: We acknowledge funding from EU grants NANOPOTS, GENIUS, EPSRC grants EP/G042357/1, EP/K01711X/1, EP/K017144/1, a Royal Society Wolfson Research Merit Award, and St. Edmund’s College, Cambridge.
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