A bipolar host containing 1,2,3-triazole for realizing highly efficient phosphorescent organic light-emitting diodes

被引：58

作者：

Kim, Myoung Ki ^{[1
]}

Kwon, Jongchul ^{[1
]}

Kwon, Tae-Hyuk ^{[1
]}

Hong, Jong-In ^{[1
]}

机构：

[1] Seoul Natl Univ, Coll Nat Sci, Dept Chem, Seoul 151747, South Korea

来源：

NEW JOURNAL OF CHEMISTRY | 2010年 / 34卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

ENERGY-TRANSFER; ELECTROLUMINESCENT DEVICES; BLUE; CONFINEMENT; EMISSION;

D O I：

10.1039/c0nj00091d

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have developed a novel host material, 9,9'-(2-((4-phenyl-1,2,3-triazol-1-yl)methyl)biphenyl4,4'-diyl)biscarbazole (CBP-TA), for realizing highly efficient blue phosphorescent OLEDs. The maximum external quantum efficiency of the OLED device developed using CBP-TA doped with a blue phosphorescent material was 30% greater than that of a CBP-based device. This enhanced external quantum efficiency resulted from the bipolar properties of the new host, owing to which well-balanced hole and electron transport through the emitting layer was achieved. The excellent bipolar carrier transport properties of the new host were experimentally verified using various OLED device data.

引用

页码：1317 / 1322

页数：6

共 21 条

[1] Endothermic energy transfer: A mechanism for generating very efficient high-energy phosphorescent emission in organic materials [J].

Adachi, C ;

Kwong, RC ;

Djurovich, P ;

Adamovich, V ;

Baldo, MA ;

Thompson, ME ;

Forrest, SR .

APPLIED PHYSICS LETTERS, 2001, 79 (13) :2082-2084

[2] High-efficiency fluorescent organic light-emitting devices using a phosphorescent sensitizer [J].

Baldo, MA ;

Thompson, ME ;

Forrest, SR .

NATURE, 2000, 403 (6771) :750-753

[3] 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

[4] 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

[5] White organic light-emitting diodes based on 2,7-bis(2,2-diphenylvinyl)-9,9′-spirobifluorene:: Improvement in operational lifetime [J].

Chuen, CH ;

Tao, YT ;

Wu, FI ;

Shu, CF .

APPLIED PHYSICS LETTERS, 2004, 85 (20) :4609-4611

[6] n-type conjugated oligoquinoline and oligoquinoxaline with triphenylamine endgroups:: Efficient ambipolar light emitters for device applications [J].

Hancock, Jessica M. ;

Gifford, Angela P. ;

Zhu, Yan ;

Lou, Yun ;

Jenekhe, Samson A. .

CHEMISTRY OF MATERIALS, 2006, 18 (20) :4924-4932

[7] Blue organic electrophosphorescence using exothermic host-guest energy transfer [J].

Holmes, RJ ;

Forrest, SR ;

Tung, YJ ;

Kwong, RC ;

Brown, JJ ;

Garon, S ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 2003, 82 (15) :2422-2424

[8] Dipolar dibenzothiophene SS-dioxide derivatives containing diarylamine: Materials for single-layer organic light-emitting devices [J].

Huang, TH ;

Lin, JT ;

Chen, LY ;

Lin, YT ;

Wu, CC .

ADVANCED MATERIALS, 2006, 18 (05) :602-+

[9] Efficient blue phosphorescent host through nonbonded conformational locking interactions [J].

Kwon, Jongchul ;

Kwon, Tae-Hyuk ;

Cho, Hyo Soon ;

Kim, Myoung Ki ;

Shin, Ik-Soo ;

Shin, Dae-Yup ;

Park, Su Jin ;

Hong, Jong-In .

NEW JOURNAL OF CHEMISTRY, 2008, 32 (08) :1368-1372

[10] Phosphorescent organic light-emitting device with an ambipolar oxadiazole host [J].

Lee, Jiun-Haw ;

Tsai, Hsin-Hung ;

Leung, Man-Kit ;

Yang, Chih-Chiang ;

Chao, Chun-Chieh .

APPLIED PHYSICS LETTERS, 2007, 90 (24)

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