Featured Research

from universities, journals, and other organizations

New form of lighting rolled out: Newspaper-style printing process

Date:
November 2, 2011
Source:
Institute of Physics (IOP)
Summary:
In a new article, researchers describe a way of creating thin, flexible sheets of organic light-emitting diodes (OLEDs) using a cheap, newspaper-style "roll-to-roll" printing process.

In this month's edition of Physics World, Paul Blom and Ton van Mol from the Holst Centre in Eindhoven describe a way of creating thin, flexible sheets of organic light-emitting diodes (OLEDs) using a cheap, newspaper-style "roll-to-roll" printing process.

These bendable materials could oust the conventional light bulb and revolutionize the way we illuminate our surroundings, being used for everything from lighting tiles and strips in homes and offices to windows that can simulate sunrise and sunset.

Rather than the traditional solid, "inorganic" LEDs that we are used to seeing in display signs, traffic lights and car indicators, OLEDs can be easily dissolved in a solvent and so sprayed onto a roll of thin, flexible, plastic foil in the same way that newspapers are printed.

"Many companies recognize the potential of OLEDs and are investing heavily in research and development in the hope that when this technology finally takes off, they will be in pole position to take advantage," Blom and Van Mol write.

The bottom layer of an OLED, which acts as a support, is a flexible material such as a polymer foil that has the electrodes and the light-emitting layer sandwiched on top to make up the complete device. Each layer is between 5 and 200 nanometres thick.

Traditional LEDs have so far failed to become a viable alternative to light bulbs because, despite being highly efficient, they have to be fabricated in clean rooms and so are expensive to make. But with about 20 per cent of the electricity the world consumes going on lighting, Blom and Van Mol state that any new, more-efficient lighting technology could greatly reduce global energy consumption.

OLEDs are poised to take over from the light bulb as their spray-on production makes them a faster and cheaper alternative to traditional LEDs and can be produced en mass through the "roll-to-roll" newspaper technique.

There are, however, several hurdles that need to be overcome before OLEDs become a commercial commodity, such as depositing the materials onto a thin film sheet with high precision, managing the properties of the different materials and, most importantly, keeping water out of the device -- OLEDs have a barrier requirement up to a thousand times more demanding that food packaging.

Blom and Van Mol describe how their institution, along with several other research institutes and commercial companies, is at the forefront of combating these problems and delivering OLEDs into the hands of the consumer.

Physics World is available online at: http://physicsworld.com/


Story Source:

The above story is based on materials provided by Institute of Physics (IOP). Note: Materials may be edited for content and length.


Cite This Page:

Institute of Physics (IOP). "New form of lighting rolled out: Newspaper-style printing process." ScienceDaily. ScienceDaily, 2 November 2011. <www.sciencedaily.com/releases/2011/11/111101095117.htm>.
Institute of Physics (IOP). (2011, November 2). New form of lighting rolled out: Newspaper-style printing process. ScienceDaily. Retrieved April 17, 2014 from www.sciencedaily.com/releases/2011/11/111101095117.htm
Institute of Physics (IOP). "New form of lighting rolled out: Newspaper-style printing process." ScienceDaily. www.sciencedaily.com/releases/2011/11/111101095117.htm (accessed April 17, 2014).

Share This



More Matter & Energy News

Thursday, April 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

German Researchers Crack Samsung's Fingerprint Scanner

German Researchers Crack Samsung's Fingerprint Scanner

Newsy (Apr. 16, 2014) — German researchers have used a fake fingerprint made from glue to bypass the fingerprint security system on Samsung's new Galaxy S5 smartphone. Video provided by Newsy
Powered by NewsLook.com
Porsche CEO Says Supercar Is Not Dead: Cue the Spyder 918

Porsche CEO Says Supercar Is Not Dead: Cue the Spyder 918

TheStreet (Apr. 16, 2014) — The Porsche Spyder 918 proves that, in an automotive world obsessed with fuel efficiency, the supercar is not dead. Porsche North America CEO Detlev von Platen attributes the brand's consistent sales growth -- 21% in 2013 -- with an investment in new technology and expanded performance dynamics. The hybrid Spyder 918 has 887 horsepower and 944 lb-ft of torque, but it can run 18 miles on just an electric charge. The $845,000 vehicle is not a consumer-targeted vehicle but a brand statement. Video provided by TheStreet
Powered by NewsLook.com
Industry's Optimism Shines At New York Auto Show

Industry's Optimism Shines At New York Auto Show

Newsy (Apr. 16, 2014) — After seeing auto sales grow last month, there's plenty for the industry to celebrate as it rolls out its newest designs. Video provided by Newsy
Powered by NewsLook.com
Ford Mustang Fetes Its 50th Atop Empire State Building

Ford Mustang Fetes Its 50th Atop Empire State Building

AFP (Apr. 16, 2014) — Ford celebrated the 50th birthday of its beloved Mustang by displaying a new model of the convertible on top of the Empire State Building in New York. Duration: 00:28 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins