標題: Full-wavelength white organic light emitting diodes with blue fluorescence and phosphorescent iridium complexes
作者: Li, Jian-Feng
Chen, Shih-Fang
Su, Shui-Hsiang
Hwang, Kao-Shing
Yokoyama, Meiso
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
公開日期: 2006
摘要: A highly efficient white organic light emitting diode (WOLED) was fabricated and possible emission mechanisms of a WOLED configured with blue fluorescence and phosphorescent iridium complexes are proposed. The white light emitting layer is comprised of a blue fluorescent emitting layer anthracene and a green and red phosphorescent emitting layer TPBI:11% Ir(ppy)(3): 0.5% Ir(piq)(2)(acac). The device exhibits white emission with a Commission Internationale de l'Eclairage coordinate of (x = 0.33, y = 0.33) and the luminance and luminous efficiency was 6389 cd/m(2) and 6.4 cd/A, respectively, at 100 mA/cm(2). Evidence indicates that the good energy overlap between the absorption spectrum of Ir(ppy)(3) and Ir(piq)(2)(acac) and the emission spectrum of TPBI results in an effective energy transfer from TPBI to Ir(ppy)(3) and Ir(piq)(2)(acac). The optimal thickness of the green and red emitting layer promotes the injection and emitting of carriers in that layer. (c) 2006 The Electrochemical Society.
URI: http://hdl.handle.net/11536/12866
http://dx.doi.org/10.1149/1.2335968
ISSN: 0013-4651
DOI: 10.1149/1.2335968
期刊: JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume: 153
Issue: 11
起始頁: H195
結束頁: H197
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