Efficient single layer solution-processed blue-emitting electrophosphorescent devices based on a small-molecule host

被引：75

作者：

Hou, Liudong ^{[1
]}

Duan, Lian ^{[1
]}

Qiao, Juan ^{[1
]}

Li, Wei ^{[1
]}

Zhang, Deqiang ^{[1
]}

Qiu, Yong ^{[1
]}

机构：

[1] Tsinghua Univ, Minist Educ, Dept Chem, Key Lab Organ Optoelect & Mol Engn, Beijing 100084, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 26期

关键词：

D O I：

10.1063/1.2952483

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report highly efficient single layer solution-processed blue small-molecule electrophosphorescent organic light-emitting diodes with iridium (III) bis[2-(4,6-difluorophenyl)-pyridinato-N,C(2 ')]picolinate (FIrpic) doped into a wide-gap 9,9-bis[4-(3 c6-di-tert-butylcarbazol-9-yl)phenyl]fluorene (TBCPF) as the emission layer. An optimized device with 1,3-bis[(4-tert-butylphenyl)-1,3,4-oxidiazolyl]phenylene as the electron-transporting component doped into the emission layer, with a blue electrophosphorescence peaked at 474 nm from FIrpic, shows a maximum luminance efficiency of 12.7 cd/A at 190 A/m(2) and brightness of 19 900 cd/m(2) at 20 V. We attribute the high performance to the excellent film forming ability and high triplet energy of TBCPF. (c) 2008 American Institute of Physics.

引用

页数：3

共 14 条

[1] Highly efficient phosphorescent emission from organic electroluminescent devices [J].

Baldo, MA ;

O'Brien, DF ;

You, Y ;

Shoustikov, A ;

Sibley, S ;

Thompson, ME ;

Forrest, SR .

NATURE, 1998, 395 (6698) :151-154

[2] LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS [J].

BURROUGHES, JH ;

BRADLEY, DDC ;

BROWN, AR ;

MARKS, RN ;

MACKAY, K ;

FRIEND, RH ;

BURN, PL ;

HOLMES, AB .

NATURE, 1990, 347 (6293) :539-541

[3] Spin-coated highly efficient phosphorescent organic light-emitting diodes based on bipolar triphenylamine-benzimidazole derivatives [J].

Ge, Ziyi ;

Hayakawa, Teruaki ;

Ando, Shinji ;

Ueda, Mitsitru ;

Akiike, Toshiyuki ;

Miyamoto, Hidetoshi ;

Kajita, Toru ;

Kakimoto, Masa-Aki .

ADVANCED FUNCTIONAL MATERIALS, 2008, 18 (04) :584-590

[4] Red electrophosphorescence from a soluble binaphthol derivative as host and iridium complex as guest [J].

Gong, X ;

Benmansour, H ;

Bazan, GC ;

Heeger, AJ .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (14) :7344-7348

[5] Red-light-emitting iridium complexes with hole-transporting 9-arylcarbazole moieties for electrophosphorescence efficiency/color purity trade-off optimizationE [J].

Ho, Cheuk-Lam ;

Wong, Wai-Yeung ;

Gao, Zhi-Qiang ;

Chen, Chin-Hsin ;

Cheah, Kok-Wai ;

Yao, Bing ;

Xie, Zhiyuan ;

Wang, Qi ;

Ma, Dongge ;

Wang, Lixiang ;

Yu, Xiao-Ming ;

Kwok, Hoi-Sing ;

Lin, Zhenyang .

ADVANCED FUNCTIONAL MATERIALS, 2008, 18 (02) :319-331

[6] Efficient solution-processed blue electrophosphorescent devices based on a novel small-molecule host [J].

Key Lab. of Organic Optoelectronics and Molecular Engineering of Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China .

Chin. Phys. Lett., 2008, 4 (1457-1460) :1457-1460

[7] Low-work-function surface formed by solution-processed and thermally deposited nanoscale layers of cesium carbonate [J].

Huang, Jinsong ;

Xu, Zheng ;

Yang, Yang .

ADVANCED FUNCTIONAL MATERIALS, 2007, 17 (12) :1966-1973

[8] White organic light-emitting devices with a solution-processed and molecular host-employed emission layer [J].

Jou, JH ;

Sun, MC ;

Chou, HH ;

Li, CH .

APPLIED PHYSICS LETTERS, 2005, 87 (04)

[9] Novel fluorene/carbazole hybrids with steric bulk as host materials for blue organic electrophosphorescent devices [J].

Li, Wei ;

Qiao, Juan ;

Duan, Lian ;

Wang, Liduo ;

Qiu, Yong .

TETRAHEDRON, 2007, 63 (41) :10161-10168

[10] Highly efficient solution processed blue organic electrophosphorescence with 14 lm/W luminous efficacy [J].

Mathai, MK ;

Choong, VE ;

Choulis, SA ;

Krummacher, B ;

So, F .

APPLIED PHYSICS LETTERS, 2006, 88 (24)

← 1 2 →