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Substrate thermal conductivity effect on heat dissipation and lifetime improvement of organic light-emitting diodes

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Authors
Chung, Seungjun; Lee, Jae-Hyun; Jeong, Jaewook; Kim, Jang-Joo; Hong, Yongtaek
Issue Date
2009-06-22
Publisher
American Institute of Physics
Citation
Appl. Phys. Lett. 94, 253302 (2009)
Abstract
We report substrate thermal conductivity effect on heat dissipation and lifetime improvement of organic light-emitting diodes (OLEDs). Heat dissipation behavior of top-emission OLEDs fabricated on silicon, glass, and planarized stainless steel substrates was measured by using an infrared camera. Peak temperature measured from the backside of each substrate was saturated to be 21.4, 64.5, and 40.5 °C, 180 s after the OLED was operated at luminance of 10 000 cd/m2 and 80% luminance lifetime was about 198, 31, and 96 h, respectively. Efficient heat dissipation through the highly thermally conductive substrates reduced temperature increase, resulting in much improved OLED lifetime.
ISSN
0003-6951 (print)
1077-3118 (online)
Language
English
URI
http://hdl.handle.net/10371/6938
DOI
https://doi.org/10.1063/1.3154557
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Material Science and Engineering (재료공학부) Journal Papers (저널논문_재료공학부)
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