En Route to High External Quantum Efficiency (∼12%), Organic True-Blue-Light-Emitting Diodes Employing Novel Design of Iridium (III) Phosphors

被引:189
作者
Chiu, Yuan-Chieh [1 ]
Hung, Jui-Yi [1 ]
Chi, Yun [1 ]
Chen, Chung-Chia [2 ,3 ]
Chang, Chih-Hao [2 ,3 ]
Wu, Chung-Chih [2 ,3 ]
Cheng, Yi-Ming [4 ]
Yu, Ya-Chien [4 ]
Lee, Gene-Hsiang [4 ]
Chou, Pi-Tai [4 ]
机构
[1] Natl Tsing Hua Univ, Dept Chem, Hsinchu 300, Taiwan
[2] Natl Taiwan Univ, Dept Elect Engn, Grad Inst Photon & Optoelect, Taipei 106, Taiwan
[3] Natl Taiwan Univ, Grad Inst Elect Engn, Taipei 106, Taiwan
[4] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan
关键词
IR(III) COMPLEXES; ELECTROPHOSPHORESCENT DEVICES; HOST MATERIALS; LIGANDS; ENERGY; PHOTOPHYSICS; DERIVATIVES; EXCIMER;
D O I
10.1002/adma.200802546
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
True-blue Ir(III) phosphors are designed, synthesized, and applied to multilayered organic true-blue-light-emitting diodes with CIEx,y color chromaticity of (0.15,0.11) and maximum external quantum efficiency of similar to 12%, demonstrating unprecedented performance among all blue-phosphorescent OLEDs ever documented. The molecular-design strategy and subsequent device-fabrication protocol reveal a major development in OLEDs.
引用
收藏
页码:2221 / +
页数:6
相关论文
共 50 条
[31]   Blue and near-UV phosphorescence from iridium complexes with cyclometalated pyrazolyl or N-heterocyclic carbene ligands [J].
Sajoto, T ;
Djurovich, PI ;
Tamayo, A ;
Yousufuddin, M ;
Bau, R ;
Thompson, ME ;
Holmes, RJ ;
Forrest, SR .
INORGANIC CHEMISTRY, 2005, 44 (22) :7992-8003
[32]   Novel host material for highly efficient blue phosphorescent OLEDs [J].
Shih, Ping-I ;
Chien, Chen-Han ;
Chuang, Chu-Ying ;
Shu, Ching-Fong ;
Yang, Cheng-Han ;
Chen, Jian-Hong ;
Chi, Yun .
JOURNAL OF MATERIALS CHEMISTRY, 2007, 17 (17) :1692-1698
[33]   Phosphorescent iridium(III) complexes with nonconjugated cyclometalated ligands [J].
Song, Yi-Hwa ;
Chiu, Yuan-Chieh ;
Chi, Yun ;
Cheng, Yi-Ming ;
Lai, Cheng-Hsuan ;
Chou, Pi-Tai ;
Wong, Ken-Tsung ;
Tsai, Ming-Han ;
Wu, Chung-Chih .
CHEMISTRY-A EUROPEAN JOURNAL, 2008, 14 (18) :5423-5434
[34]   Management of singlet and triplet excitons for efficient white organic light-emitting devices [J].
Sun, YR ;
Giebink, NC ;
Kanno, H ;
Ma, BW ;
Thompson, ME ;
Forrest, SR .
NATURE, 2006, 440 (7086) :908-912
[35]   The evolution of organometallic complexes in organic light - Emitting devices [J].
Thompson, Mark .
MRS BULLETIN, 2007, 32 (09) :694-701
[36]   Highly efficient organic blue electrophosphorescent devices based on 3,6-bis(triphenylsilyl)carbazole as the host material [J].
Tsai, Ming-Han ;
Lin, Hao-Wu ;
Su, Hai-Ching ;
Ke, Tung-Huei ;
Wu, Chung-Chih ;
Fang, Fu-Chuan ;
Liao, Yuan-Li ;
Wong, Ken-Tsung ;
Wu, Chih-I .
ADVANCED MATERIALS, 2006, 18 (09) :1216-+
[37]   Charge transfer excitation of organometallic compounds - Spectroscopy and photochemistry [J].
Vogler, A ;
Kunkely, H .
COORDINATION CHEMISTRY REVIEWS, 2004, 248 (3-4) :273-278
[38]   Excimer-based white phosphorescent organic light emitting diodes with nearly 100 % internal quantum efficiency [J].
Williams, Evan L. ;
Haavisto, Kirsi ;
Li, Jian ;
Jabbour, Ghassan E. .
ADVANCED MATERIALS, 2007, 19 (02) :197-+
[39]   Efficient organic blue-light-emitting devices with double confinement on terfluorenes with ambipolar carrier transport properties [J].
Wu, CC ;
Lin, YT ;
Wong, KT ;
Chen, RT ;
Chien, YY .
ADVANCED MATERIALS, 2004, 16 (01) :61-+
[40]   Electronic structures and electron-injection mechanisms of cesium-carbonate-incorporated cathode structures for organic light-emitting devices [J].
Wu, CI ;
Lin, CT ;
Chen, YH ;
Chen, MH ;
Lu, YJ ;
Wu, CC .
APPLIED PHYSICS LETTERS, 2006, 88 (15)