Highly efficient blue phosphorescent OLEDs using large bandgap host materials

被引：1

作者：

Fang, Fu-Chuan ^{[1
]}

Liao, Yuan-Li ^{[1
]}

Wong, Ken-Tsung ^{[1
]}

Tsai, Ming-Han ^{[2
,3
]}

Lin, Hao-Wu ^{[2
,3
]}

Su, Hai-Ching ^{[2
,3
]}

Wu, Chung-chih ^{[2
,3
]}

Wu, Chih-, I ^{[2
,3
]}

机构：

[1] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

[2] Natl Taiwan Univ, Grad Inst Electopt Engn, Dept Elect Engn, Taipei 106, Taiwan

[3] Natl Taiwan Univ, Grad Inst Elect Engn, Dept Elect Engn, Taipei 106, Taiwan

来源：

ORGANIC OPTOELECTRONICS AND PHOTONICS II | 2006年 / 6192卷

关键词：

blue electrophosphorescence; host material; carbazole; 9,9'-spirobifluorene; triarylamine;

D O I：

10.1117/12.662374

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The synthesis and properties of 3,6-bis(triphenylsilyl)carbazole as an effective host material for blue electrophosphorescence are reported. The electrochemically active C3 and C6 sites of carbazole are non-conjugated blocked with the steric, bulky and large-gap triphenylsilyls, the resulting new compound retains the large triplet energy of carbazole yet exhibits much enhanced morphological stability and electrochemical stability in comparison with previous carbazole-based host materials. Using this new host material, blue phosphorescent OLEDs having high efficiencies up to 16%, 30.6 cd/A and 26.7 1m/W are demonstrated.

引用

页数：8

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