Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > High Performance OLED on Carbon Nanotube Electrodes

High Performance OLED on Carbon Nanotube Electrodes

Posted on May 09, 2006

Researchers at the Regroupement Québecois sur les Matériaux de Pointe (RQMP) in Québec, Canada have assembled an organic light emitting diode (OLED) that uses thin and conductive single wall carbon nanotube sheets as the transparent electrode. The performance of their electrode rivals that of the transparent conducting oxide - indium tin oxide - currently used in commercial applications. The demonstration of this new technology recently appeared in the May online issue of Applied Physics Letters.

Université de Montréal, OLED device
Schematic of the OLED device fabricated on a carbon nanotube electrode (above) and image of the device revealing the carbon nanotube fibers that compose the fabric-like sheet electrode (below).

Copyright © Université de Montréal
Université de Montréal, carbon nanotube fibers

Organic light emitting diodes have in recent years emerged as a promising low cost technology for making large area flat panel displays and flexible light emitting fabrics. However, the fabrication of flexible OLEDs has up to now been held back by the fragility of the brittle indium tin oxide layer that serves as the transparent electrode. Constant bending of this layer unavoidably leads to cracking and device failure. By using carbon nanotubes, a highly conductive and flexible tube shaped carbon nanostructure, thin sheets a few tens of nanometers in thickness can be fabricated following a procedure akin to making paper. These sheets preserve the conductivity and flexibility of the carbon nanotubes and are thin enough to be highly transparent.

By following the fabrication procedure they developed, the researchers succeeded in producing a high-performance OLED on this new electrode material. In their work they also outline the parameters that can be further optimized in order improve the performance of their design. "In addition to their flexibility, carbon nanotube sheets exhibit a number of properties that make them an attractive alternative to transparent conducting oxides for display and lighting applications," says Carla Aguirre, the leading author of the paper. "By applying the appropriate chemical treatment they can in principle be also made to replace the metal electrode in order to make OLEDs that emit light from both sides."

To learn more, refer to the scientific article: "Carbon nanotube sheets as electrodes in organic light-emitting diodes" Appl. Phys. Lett. 88 183104 (2006) or visit this link.

####
Contact:
Richard Martel
r.martel@umontreal.ca

Copyright © Nanoscale Science and Technology Portal for Univesité de Montréal and École Polytechnique

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Nanotubes/Buckyballs/Fullerenes/Nanorods

How to draw electricity from the bloodstream: A one-dimensional fluidic nanogenerator with a high power-conversion efficiency September 11th, 2017

Silk could improve sensitivity, flexibility of wearable body sensors August 20th, 2017

Regulation of two-dimensional nanomaterials: New driving force for lithium-ion batteries July 26th, 2017

Killing cancer in the heat of the moment: A new method efficiently transfers genes into cells, then activates them with light. This could lead to gene therapies for cancers July 9th, 2017

Announcements

Assembly of nanoparticles proceeds like a zipper: Viruses and nanoparticles can be assembled into processable superlattice wires according to scientists from Aalto University Finland September 25th, 2017

Enhancing the sensing capabilities of diamonds with quantum properties: A simple method can give diamonds the special properties needed for quantum applications such as sensing magnetic fields September 24th, 2017

Quantum twisted Loong confirms the physical reality of wavefunctions September 23rd, 2017

Application of air-sensitive semiconductors in nanoelectronics: 2-D semiconductor gallium selenide in encapsulated nanoelectronic devices September 22nd, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project