Featured Research

from universities, journals, and other organizations

Efficiency Of Blue Organic Light-emitting Diode Boosted By 25%

Date:
March 30, 2009
Source:
DOE/Pacific Northwest National Laboratory
Summary:
Researchers have designed new host materials for a blue phosphorescent OLED that boost efficiency by at least 25 percent and help solve "weakest link" in development of cost-effective white OLEDs.

New, more efficient host materials for the blue phosphorescent OLED (pictured) have been designed, developed and tested by Pacific Northwest National Laboratory scientists. By using new host materials, scientists have been able to improve the efficiency by at least 25 percent and have unlocked doors to developing much more efficient white OLEDs.
Credit: Image courtesy of DOE/Pacific Northwest National Laboratory

Lighting consumes one-fifth of the electricity generated in the United States. Solid-state lighting offers tremendous potential to improve the situation – once major research challenges are overcome.

The most promising technology is the organic light-emitting diode, or OLED. These multi-layered devices produce light by running an electrical current through a specially engineered host material into which light-producing phosphorescent molecules are embedded or "doped." The white light envisioned for large-scale applications, such as rooms and buildings, consists of red, green and blue light.

"The weakest link in OLED research is the absence of an efficient, long-lasting blue light to accompany the red and green," said Pacific Northwest National Laboratory scientist Asanga Padmaperuma. Development of better host materials to manage the flow of electricity through the device could help solve that problem.

Padmaperuma and his collegues have designed, synthesized and tested new materials that improve the power efficiency of blue OLEDs by at least 25 percent.

On Sunday, March 22, PNNL scientists will discuss advancements in blue OLED research in two presentations and a poster session at the spring meeting of the American Chemical Society.

The Department of Energy's solid state lighting program is funding the OLED research.


Story Source:

The above story is based on materials provided by DOE/Pacific Northwest National Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

DOE/Pacific Northwest National Laboratory. "Efficiency Of Blue Organic Light-emitting Diode Boosted By 25%." ScienceDaily. ScienceDaily, 30 March 2009. <www.sciencedaily.com/releases/2009/03/090322154424.htm>.
DOE/Pacific Northwest National Laboratory. (2009, March 30). Efficiency Of Blue Organic Light-emitting Diode Boosted By 25%. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2009/03/090322154424.htm
DOE/Pacific Northwest National Laboratory. "Efficiency Of Blue Organic Light-emitting Diode Boosted By 25%." ScienceDaily. www.sciencedaily.com/releases/2009/03/090322154424.htm (accessed July 24, 2014).

Share This




More Matter & Energy News

Thursday, July 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

TSA Administrator on Politics and Flight Bans

TSA Administrator on Politics and Flight Bans

AP (July 24, 2014) TSA administrator, John Pistole's took part in the Aspen Security Forum 2014, where he answered questions on lifting of the ban on flights into Israel's Tel Aviv airport and whether politics played a role in lifting the ban. (July 24) Video provided by AP
Powered by NewsLook.com
Creative Makeovers for Ugly Cellphone Towers

Creative Makeovers for Ugly Cellphone Towers

AP (July 24, 2014) Mobile phone companies and communities across the country are going to new lengths to disguise those unsightly cellphone towers. From a church bell tower to a flagpole, even a pencil, some towers are trying to make a point. (July 24) Video provided by AP
Powered by NewsLook.com
Algonquin Power Goes Activist on Its Target Gas Natural

Algonquin Power Goes Activist on Its Target Gas Natural

TheStreet (July 23, 2014) When The Deal's Amanda Levin exclusively reported that Gas Natural had been talking to potential suitors, the Ohio company responded with a flat denial, claiming its board had not talked to anyone about a possible sale. Lo and behold, Canadian utility Algonquin Power and Utilities not only had approached the company, but it did it three times. Its last offer was for $13 per share as Gas Natural's was trading at a 60-day moving average of about $12.50 per share. Now Algonquin, which has a 4.9% stake in Gas Natural, has taken its case to shareholders, calling on them to back its proposals or, possibly, a change in the target's board. Video provided by TheStreet
Powered by NewsLook.com
Robot Parking Valet Creates Stress-Free Travel

Robot Parking Valet Creates Stress-Free Travel

AP (July 23, 2014) 'Ray' the robotic parking valet at Dusseldorf Airport in Germany lets travelers to avoid the hassle of finding a parking spot before heading to the check-in desk. (July 23) Video provided by AP
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