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Dankook University has developed the highest efficiency of blue OLED element
Writer Master
Date 2011.05.19 (Modified Date : 2011.08.29)
View Count 3,047
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Dankook University, a team led by professor Jun Yeop Lee, has announced on international academic journal, “advanced materials,” in the field of materials
Embody at most 25.5% of the luminous efficiency.

Known as AMOLED, organic light emitting diode (OLED), the display for next generation, is developed with the highest efficiency of blue colored elements by a team led by professor Jun-Yeop Lee in Dankook University.

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 improve it, there has been many of research going on so far, while efficiency enhancement for blue colored elements still stays as problem. 

In order to solve efficiency problem of blue colored elements, a team led by professor Jun Yeop Lee in Dankook University, proceeding a research regarding a new luminous blue colored materials, developing 18.4 quantum efficiency by significantly enhancing 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.

Even though there was no such a report that dark blue colored luminous elements with color characteristics with applicable into display devices are said to have no more than 20% of efficiency, a team led by professor Jun Yeop Lee overcame this, developing a blue colored elements with 25.4% of efficiency , which is the best in the world. Especially, based on the fact that previous elements show a 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. 

This research expects AMOLED, currently applicable to smart phone, to lower its consumers electricity in a significant level, contributing to an enhancement of consumed electricity of OLED TV for the future reference. In addition, it is expected for AMOED to serve as a role of bridge connecting localization of OLED materials and acquisition of competitiveness in the field of OLED industry. Especially, the research results of this team led by professor Jun Yeop Lee is acknowledged by one of the best academic journal, “Advanced Materials,” on the 10th, February as a part of news on internet flash boards.
This research was conducted by knowledge economy department and support from Kyung-Gi Do, and technologies regarding high efficient elements and materials are patented, proceeding a technology transfer with mutual negotiation with companies in domestics and abroad. 
 


▶ Professor, Jun Yeop Lee


▶ Blue colored OLED