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A Study on the Fabrication and Characteristic Analysis of Blue Organic Light Emitting Devices  

김중연 (SK텔레콤)
노병규 ((주)현대디스플레이테크놀로지)
강명구 (극동정보대학 전자통신과)
오환술 (건국대학교 전자공학과)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TE / v.39, no.1, 2002 , pp. 9-15 More about this Journal
Abstract
In this thesis, blue emission organic light emitting devices were fabricated by using vacuum deposition method. Two types of device were employed to realize blue emission. Type I had an emitting layer containing TPB-doped $Alq_3$ and type II had an emitting layer containing DPA-doped $Alq_3$. The variable dopant concentration was 0.5 ~2 wt%. The electrical and optical characteristics of these devices have been investigated. The more dopant concentration increased, the nearer the blue coordinate. Type I than type II had a lower turn on voltage and driving voltage. The emission luminescence of type II was brighter than that of type I. When we applied 15V to type II with DPA(2wt%)-doped $Alq_3$, we have achived the emission luminescence of 1282cd/$m^2$, the emission wavelength of 476nm and the blue emission CIE coordination of (0.1273, 0.0672)
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