Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > Nanometer Graphene Makes Novel OLEDs Display

Abstract:
Researchers at Stanford University have successfully developed brand new concept of organic lighting-emitting diodes (OLEDs) with a few nanometer of graphene as transparent conductor. This paved the way for inexpensive mass production of OLEDs on large-area low-cost flexible plastic substrate, which could be rolled up like wallpaper and virtually applied to anywhere you want.

Nanometer Graphene Makes Novel OLEDs Display

Stanford, CA | Posted on March 10th, 2010

Due to its superb image quality, low power consumption and ultra-thin device structure, OLED has been developed for more than 20 years, and recently finds its application in ultra-thin televisions and other display screens such as those on digital cameras and mobile phones. OLEDs consist of active organic luminescent structure sandwiched between two electrodes, one of which must be transparent. Traditionally, indium tin oxide (ITO) is used in this type of devices. However, indium is rare, expensive and difficult to recycle. Scientists have been actively searching for an alternative candidate.

The next generation of optoelectronic devices requires transparent conductive electrodes to be lightweight, flexible, cheap, environmental attractive, and compatible with large-scale manufacturing methods. Graphene, single layer of graphite, is becoming a very promising candidate due to its unique electrical and optical properties in last two years. Very recently, Junbo Wu et al., researchers at Stanford University, successfully demonstrated the application of graphene in OLEDs for the first time.

Junbo Wu, leading researcher of the development, said that they achieved OLEDs on graphene with performance similar to a control device on conventional ITO transparent anodes, which is very exciting and promising for real-world application. ‘The current report by Wu et al. puts forward a strong case for graphene as a transparent conductor given its competitive performance, even with significantly high sheet resistance.' said Chongwu Zhou, professor at University of Southern California in the Perspective of ACS Nano, 4(1), 2010.

‘Graphene has the potential to be a transparent electrode with higher performance, which means, more transparent, while at the same time, being more conductive. It could also be orders of magnitude cheaper than conventional transparent conductor, like ITO. It really has the potential to be both better and cheaper.' said Prof. Peter Peumans in Podcast Episode 30, ACS Nano January 2010. ‘It (graphene) does have additional advantage that the electrode is very thin, only a couple of nanometer thick, which gives you potentially a lot more freedom how you design your devices.' Peter also added.

This research sheds light on the enormous potential of graphene, and opens up an entirely new avenue towards the development of efficient and economical transparent conductors for flexible optoelectronic devices, such as OLEDs and organic photovoltaic cells. Transferring of large-area graphene thin film to a foreign flexible substrate has been previously demonstrated. Combining these technologies together, we have good reason to expect graphene OLEDs product on flexible plastic in the near future.

The research is published in the journal ACS Nano, 4(1), 2010, entitled ‘Organic Light-Emitting Diodes on Solution-Processed Graphene Transparent Electrodes'. The authors are Junbo Wu, Mukul Agrawal, Hector A. Becerril, Zhenan Bao, Zunfeng Liu, Yongsheng Chen and Peter Peumans. For detailed information, please refer to pubs.acs.org/doi/abs/10.1021/nn900728d.

####

For more information, please click here

Contacts:
Junbo Wu
Phone: (650) 704-4362

Copyright © Stanford University

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

News and information

Iranian Researchers Present New Model to Strengthen Superconductivity at Higher Temperatures April 19th, 2014

Iranian Researchers Produce New Anti-Cancer Drug from Turmeric April 19th, 2014

'Exotic' material is like a switch when super thin April 18th, 2014

Innovative strategy to facilitate organ repair April 18th, 2014

Display technology/LEDs/SS Lighting/OLEDs

Transparent Conductive Films and Sensors Are Hot Segments in Printed Electronics: Start-ups in these fields show above-average momentum, while companies working on emissive displays such as OLED are fading, Lux Research says April 17th, 2014

PAM-XIAMEN Offers UV LED wafer April 15th, 2014

Better solar cells, better LED light and vast optical possibilities April 12th, 2014

Printed Electronics Europe - Plastic Logic shows a flexible OLED display for wearable devices April 11th, 2014

Possible Futures

Virus structure inspires novel understanding of onion-like carbon nanoparticles April 10th, 2014

Local girl does good March 22nd, 2014

Surface Characteristics Influence Cellular Growth on Semiconductor Material March 12th, 2014

The "Tipping Point" February 12th, 2014

Academic/Education

Director Wally Pfister joins UC Berkeley neuroengineers to discuss the science behind ‘Transcendence’ April 7th, 2014

First annual science week highlights STEM pipeline and partnerships: UB, SUNY Buffalo State and ECC team up with the City of Buffalo and its schools for April 7-11 events April 3rd, 2014

Global 450 consortium announces new general manager of internal operations: TSMC’s Cheng-Chung Chien Receives Unanimous Support, Brings History of Innovation and Efficiency to Global Consortium of Companies Driving Industry Transition to 450mm Wafer Technology March 26th, 2014

NanoTecNexus to Host "Chemistry of Wine" Fundraiser in Support of STEM Education - Collaborations Key to Success - March 20th, 2014

Announcements

Iranian Researchers Present New Model to Strengthen Superconductivity at Higher Temperatures April 19th, 2014

Iranian Researchers Produce New Anti-Cancer Drug from Turmeric April 19th, 2014

'Exotic' material is like a switch when super thin April 18th, 2014

Innovative strategy to facilitate organ repair April 18th, 2014

Solar/Photovoltaic

High-temperature plasmonics eyed for solar, computer innovation April 17th, 2014

A molecular approach to solar power: Switchable material could harness the power of the sun — even when it’s not shining April 15th, 2014

Shiny quantum dots brighten future of solar cells: Photovoltaic solar-panel windows could be next for your house April 14th, 2014

Scientists open door to better solar cells, superconductors and hard-drives: Research enhances understanding of materials interfaces April 14th, 2014

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







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE