Engineers develop highly efficient 'true blue' OLED material

SEOUL, Nov. 23 (Yonhap) -- A team of South Korean engineers said Sunday that they have developed a highly efficient "true blue" material that can help develop the next generation organic light-emitting diode (OLED) screens The breakthrough by Jin Sung-ho's team at Pusan National University is significant because it can accelerate the development of color OLEDs that have the potential to replace conventional liquid crystal displays (LCDs).

"The latest discovery is expected to allow creation of efficient OLEDs that can
function longer and use less power," the chemistry professor said in a report.
He added that with the blue-color material, engineers have been able to make an
OLED with greatly improved qualities.
Research has shown that OLEDs have better reaction time, offer a greater field of
vision than LCDs and can be made to bend, because they do not require a so-call
backlight to light the screen.
They also have better color producing qualities, require less power and last
longer, but scientists have problems making a true blue organic light-emitting
material.
In order to get maximum color and clarity, the OLED must be made to mix green,
red and blue lights. Scientists have been able to make efficient green and red
organic light-emitting materials in the past although they have run into
complications with blue.
Past blue materials faded more quickly than the other two colors, and those made
tended towards a greener shade rather than being true blue.
The latest development, meanwhile, has been funded by the Ministry of Education,
Science and Technology and published in the latest online issue of Advanced
Functional Materials.