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The polarized carbon nanotube thin film LED

Kinoshita, Megumi ; Steiner, Mathias ; Engel, Michael ; Small, Joshua P. ; Green, Alexander A. ; Hersam, Mark C. ; Krupke, Ralph ; Mendez, Emilio E. ; Avouris, Phaedon (2010)
The polarized carbon nanotube thin film LED.
In: Optics Express, 18 (25)
doi: 10.1364/OE.18.025738
Article, Bibliographie

Abstract

We demonstrate a light emitting p-i-n diode made of a highly aligned film of separated (99%) semiconducting carbon nanotubes, self-assembled from solution. By using a split gate technique, we create p- and n-doped regions in the nanotube film that are separated by a micron-wide gap. We inject p- and n-type charge carriers into the device channel from opposite contacts and investigate the radiative recombination using optical micro-spectroscopy. We find that the threshold-less light generation efficiency in the intrinsic carbon nanotube film segment can be enhanced by increasing the potential drop across the junction, demonstrating the LED-principle in a carbon nanotube film for the first time. The device emits infrared light that is polarized along the long axes of the carbon nanotubes that form the aligned film.

Item Type: Article
Erschienen: 2010
Creators: Kinoshita, Megumi ; Steiner, Mathias ; Engel, Michael ; Small, Joshua P. ; Green, Alexander A. ; Hersam, Mark C. ; Krupke, Ralph ; Mendez, Emilio E. ; Avouris, Phaedon
Type of entry: Bibliographie
Title: The polarized carbon nanotube thin film LED
Language: English
Date: 23 November 2010
Journal or Publication Title: Optics Express
Volume of the journal: 18
Issue Number: 25
DOI: 10.1364/OE.18.025738
Abstract:

We demonstrate a light emitting p-i-n diode made of a highly aligned film of separated (99%) semiconducting carbon nanotubes, self-assembled from solution. By using a split gate technique, we create p- and n-doped regions in the nanotube film that are separated by a micron-wide gap. We inject p- and n-type charge carriers into the device channel from opposite contacts and investigate the radiative recombination using optical micro-spectroscopy. We find that the threshold-less light generation efficiency in the intrinsic carbon nanotube film segment can be enhanced by increasing the potential drop across the junction, demonstrating the LED-principle in a carbon nanotube film for the first time. The device emits infrared light that is polarized along the long axes of the carbon nanotubes that form the aligned film.

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: 08 Nov 2011 11:31
Last Modified: 05 Mar 2013 09:55
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