Highly Efficient Yellow OLED Using Phosphorescent and Fluorescent Dopants

摘要：

The efficiencies of an organic light-emitting diode (OLED) using tris- (8 -hydroxy-quinoline) aluminum (Alq3) as host and tetraphenylnapthacene (Rubrene) as yellow dopant were greatly increased by adding a small amount (0.3 wt％ ) of a phosphorescent Ir compound ridium(Ⅲ)bis(3-(2-benzothiazolyl)-7-(diethylamino)-2H-1-benzopyran-2-onato-Nr, C4) (acetyl acetonate) (Ir(C6)2(acac)) sensitizer. The device had a simple structure of indium tin oxide (ITO)/4, 4, 4tris(N-(2-naphthyl)-N-phenyl-amino) triphenylamine (T-NATA) (40 nm)/N, N-bis (1-naphthyl)-N, N-diphenyl-1, 1-biphenyl-4, 4-diamine (NPB) (40 nm)/Alq3: Rubrene(0.7 wt％ ): Ir(C6)2(acac) (0.3 wt％) (40 nm)/Alq3 (40 nm)/ LiF (1 nm)/ Al (120 nm), and the current efficiencies of this device keep a high value of 13.9 cd/A, even the luminance rising to 37 000 cd/m2. The Commission International dEclairage (CIE) coordinates x and y are 0.46, 0. 44 of yellow color. The high efficiency at the high luminance was proposed due to the phosphorescent Ir(C6)2(acac) can harvest the singlet and triplet excitons formed in Alq3 and then efficiently transfer to yellow dopant Rubrene.

关键词： Organic Light-emitting Diode Fluorescence Phosphorescent Sensitizer

作者: X. R. Wang H. Tang G. H. Ding H. You D. G. Ma H. Tian R. G. Sun

作者单位: Key Laboratory of Advanced Displays and System Application,Shanghai University, Jiading, Shanghai 20 Key Laboratory of Advanced Materials and Institute of Fine Chemicals, East China University of Scien State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chi

会议类型: 国际会议

会议名称: 2007亚洲显示国际会议（AD07）

会议地点: 上海

会议语种:英文

页码: 1386-1389

在线出版日期: 2007-03-12（万方平台首次上网日期，不代表论文的发表时间）