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Home > Press > Prof. Choi Unveils Method to Improve Emission Efficiency of OLED

Abstract:
A KAIST research team led by Prof. Kyung-Cheol Choi of the School of Electrical Engineering & Computer Science discovered the surface plasmon-enhanced spontaneous emission based on an organic light-emitting device (OLED), a finding expected to improve OLED's emission efficiency, KAIST authorities said on Thursday (July 9).

Prof. Choi Unveils Method to Improve Emission Efficiency of OLED

Korea | Posted on July 15th, 2009

For surface plasmon localization, silver nanoparticles were thermally deposited in a high vacuum on cathode. Since plasmons provide a strong oscillator decay channel, time-resolved photoluninescene (PL) results displayed a 1.75-fold increased emission rate, and continuous wave PL results showed a twofold enhanced intensity.

"The method using surface plasmon represents a new technology to enhance the emission efficiency of OLED. It is expected to greatly contribute to the development of new technologies in OLED and flexible display, as well as securing original technology," Prof. Choi said.

The finding was published in the April issue of Applied Physics Letters and the June 25 issue of Optics Express. It will be also featured as the research highlight of the August issue of Nature Photonics and Virtual Journal of Ultrafast Science.

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About KAIST
Korea Advanced Institute of Science and Technology (KAIST) was established in 1971 as the nation’s first graduate school specializing in science and engineering education and research. The school’s founding was a catalyst for Korea’s rapid rise from a producer of light industry goods to a world leader in high-technology industries.

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