High-Efficiency Deep-Blue Light-Emitting Diodes Based on Phenylquinoline/Carbazole-Based Compounds

被引：183

作者：

Lee, Seung Joon ^{[1
]}

Park, Jin Su ^{[1
]}

Yoon, Kyung-Jin ^{[1
]}

Kim, Young-Inn ^{[1
]}

Jin, Sung-Ho ^{[1
]}

Kang, Sung Kwon ^{[5
]}

Gal, Yeong-Soon ^{[6
]}

Kang, Sunwoo ^{[7
]}

Lee, Jin Yong ^{[7
]}

Kang, Jae-Wook ^{[2
]}

Lee, Se-Hyung ^{[3
,4
]}

Park, Hyung-Dol ^{[3
,4
]}

Kim, Jang-Joo ^{[3
,4
]}

机构：

[1] Pusan Natl Univ, Dept Chem, Educ & Interdisciplinary Program Adv Mat, Pusan 609735, South Korea

[2] Korea Inst Mat Sci, Dept Surface Technol, Chang Won 641831, South Korea

[3] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea

[4] Seoul Natl Univ, OLED Ctr, Seoul 151744, South Korea

[5] Chungnam Natl Univ, Dept Chem, Taejon 305764, South Korea

[6] Kyungil Univ, Polymer Chem Lab, Hayang 712701, South Korea

[7] Sungkyunkwan Univ, Dept Chem, Suwon 440746, South Korea

来源：

ADVANCED FUNCTIONAL MATERIALS | 2008年 / 18卷 / 24期

关键词：

D O I：

10.1002/adfm.200800697

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Highly efficient deep-blue fluorescent materials based on phenylquinoline-carbazole derivatives (PhQ-CVz, MeO-PhQ-CVz, and CN-PhQ-CVz) are synthesized for organic light-emitting diodes (OLEDs). The materials form high-quality amorphous thin films by thermal evaporation and the energy levels can be easily adjusted by the introduction of different electron-donating and electron-withdrawing groups on carbazoylphenylquinoline. Non-doped deep-blue OLEDs that use PhQ-CVz as the emitter show bright emission (Commission Internationale de L'Eclairage (CIE) coordinates, x = 0.156, y = 0.093) with an external quantum efficiency of 2.45%. Furthermore, the material works as an excellent host material for 4,4'-bis(9-ethyl-3-carbazovinylene)- 1,1'-biphenyl dopant to get high-performance OLEDs with excellent deep-blue CIE coordinates (x = 0.155, y = 0.157), high power efficiency (5.98 lm W-1), and high external quantum efficiency (5.22%).

引用

页码：3922 / 3930

页数：9

共 42 条

[1] NEW CONJUGATED POLYANTHRAZOLINES CONTAINING THIOPHENE MOIETIES IN THE MAIN CHAIN [J].