New fluorescent OLEDs more efficient than once believed

New fluorescent OLEDs more efficient than once believedEngineering researchers at the University of Michigan have created a remarkably effective fluorescent blue OLED.

OLED means organic light emitting diode for those who don’t know.

OLEDs are viewed as the next generation of display technology. They are already being used in televisions, cell phones and computers, and they could potentially be used for a vast array of light sources from billboards to indoor and outdoor lighting. Fluorescent OLEDs are usually less efficient at radiating light per unit area than their phosphorescent equivalents.

According to the University of Michigan News Service, that may be changing because of new findings by Professor John Kieffer and graduate student Changgua Zhen of the Department of Materials Science and Engineering. They released a research paper in the journal Advanced Functional Materials that destroys earlier records.

It used to be that the limit for the efficiency of fluorescent OLEDs was 5 percent. But now, Kieffer and his coworkers have made fluorescent OLEDs with a near 10 percent efficiency level.

"Our results clearly indicate that fluorescent material have a bright future for highly efficient and stable OLEDs for flat-panel display and lighting applications," Kieffer said.

This was achieved by restructuring a material being used by U-M collaborators in Singapore using computer models.

"With the material, they had some positive results," Kieffer said.

"We took those molecules and started to reconfigure them in a computer model, adding different functional groups in a systematic way. We identified the mechanisms that control the performance of OLEDs, and by applying the fundamental understanding so obtained we improved the materials characteristics. Our research demonstrated the importance of simulation-based predictive design."

The paper is titled: "Achieving Highly Efficient Fluorescent Blue Organic Light-Emitting Diodes Through Optimizing Molecular Structures and Device Configuration". And guess what? It’s behind an extremely overpriced academic journal pay wall.

Source: TG Daily

Tags: OLED, technologies

Add comment

Your name:
Sign in with:
Your comment:

Enter code:

E-mail (not required)
E-mail will not be disclosed to the third party

Last news

Samsung Galaxy Tab S4 will boast a larger 10.5-inch display with 2560 x 1600 pixels resolution
The new power scheme will allow users to extract slightly more performance out of their machines
Huawei's P20 family of smartphones is scheduled for a March 27 announcement in Paris
New stats show Amazon surpassed Microsoft this week
Qualcomm and Broadcom executiveswere met in February 14
Gmail Go at its core will do what the regular Gmail app does
Qualcomm didn’t say who is building the X24 modem
The Samsung Galaxy A5 (2017) Review
The evolution of the successful smartphone, now with a waterproof body and USB Type-C
February 7, 2017 /
Samsung Galaxy TabPro S - a tablet with the Windows-keyboard
The first Windows-tablet with the 12-inch display Super AMOLED
June 7, 2016 /
Keyboards for iOS
Ten iOS keyboards review
July 18, 2015 /
Samsung E1200 Mobile Phone Review
A cheap phone with a good screen
March 8, 2015 / 4
Creative Sound Blaster Z sound card review
Good sound for those who are not satisfied with the onboard solution
September 25, 2014 / 2
Samsung Galaxy Gear: Smartwatch at High Price
The first smartwatch from Samsung - almost a smartphone with a small body
December 19, 2013 /

News Archive



Do you use microSD card with your phone?
or leave your own version in comments (6)