Realized the highest quantum efficiency of 25.5%
Published in 'Advanced Materials,’ the world renowned academic journal in materials
Known as AMOLED, organic light emitting diode (OLED), the display for the next generation, is developed with the highest efficiency of blue colored elements by a team led by professor Joon Yeop Lee in Dankook University.
▶ professor Joon Yeop Lee(Department of Polymer System Engineering)
The developed blue colored element shows quantum efficiency of 25.5%, and research results are published in the world academic journals "Advanced Materials" on the February 10th, on the version of internet news.
In general, OLED displays consist of red, green, and blue luminous elements for display devices. So far, red and green luminous elements have been developing high efficiency elements with more than 20% of quantum efficiency, while blue colored elements have lower than 10% of efficiency, having a serious difficulty regarding an increase of consumed electricity. In order to solve efficiency problem of blue colored elements, the team led by professor Jun Yeop Lee in Dankook University, proceeding a research regarding a new luminous blue colored elements, developing 18.4% of quantum efficiency by significantly enhancing the efficiency of previous element followed by using a new materials after improving structures of previous elements, and finally developed a new blue colored elements with the highest efficiency in the world.
Especially, based on the fact that the previous elements show lower efficiency in the luminance range compared to the max efficiency that they have, there was an enhancement in terms of application with new elements, establishing more than 20% of efficiency in the luminance range and unique characteristics of blue colored elements that are applicable to products. Currently, there is no applicable blue colored element that shows the efficiency of more than 20%.
This research expects AMOLED, currently applicable to smart phone, to lower its consuming electricity in a significant level, contributing to an enhancement of consumed electricity of OLED TV for the future reference
Professor Joon Yeop Lee said "we are proceeding technology transfer with mutual negotiation with companies in both domestic and abroad," and he also said "localization of OLED materials and competitiveness of related industries will be enhanced through this research."