Highly efficient bilayer green phosphorescent organic light emitting devices

被引：48

作者：

Jeon, Woo Sik ^{[1
,2
]}

Park, Tae Jin ^{[1
,2
]}

Park, Jung Joo ^{[1
,2
]}

Kim, Sun Young ^{[1
,2
]}

Jang, Jin ^{[1
,2
]}

Kwon, Jang Hyuk ^{[1
,2
]}

Pode, Ramchandra ^{[3
]}

机构：

[1] Kyung Hee Univ, Adv Display Res Ctr, Dingdaemoon Ku, Seoul 130701, South Korea

[2] Kyung Hee Univ, Dept Informat Display, Dingdaemoon Ku, Seoul 130701, South Korea

[3] Kyung Hee Univ, Dept Phys, Seoul 130701, South Korea

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 11期

关键词：

D O I：

10.1063/1.2898527

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a highly efficient green phosphorescent device comprising only of two organic layers. A host material bis[2-(2-hydroxyphenyl)-pyridine]beryllium having a good electron transporting and energy transfer characteristics, and a wide band gap hole transport material N,N-'-di(4-(N,N-'-diphenyl-amino)phenyl)-N,N-'-diphenylbenzidine lead to the fabrication of a simplified high efficiency device. The driving voltage value of 3.3 V to reach a luminance of 1000 cd/m(2) is reported. The maximum current- and power-efficiency values of 38.30 cd/A and 46.60 lm/W are demonstrated in this device. Results reveal a practical way to fabricate highly efficient truly bilayer organic devices for trouble-free manufacturing processes. (c) 2008 American Institute of Physics.

引用

页数：3

共 21 条

[1] Nearly 100% internal phosphorescence efficiency in an organic light-emitting device [J].

Adachi, C ;

Baldo, MA ;

Thompson, ME ;

Forrest, SR .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (10) :5048-5051

[2] 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

[3] High-efficiency organic electrophosphorescent devices with tris(2-phenylpyridine)iridium doped into electron-transporting materials [J].

Adachi, C ;

Baldo, MA ;

Forrest, SR ;

Thompson, ME .

APPLIED PHYSICS LETTERS, 2000, 77 (06) :904-906

[4] Very high-efficiency green organic light-emitting devices based on electrophosphorescence [J].

Baldo, MA ;

Lamansky, S ;

Burrows, PE ;

Thompson, ME ;

Forrest, SR .

APPLIED PHYSICS LETTERS, 1999, 75 (01) :4-6

[5] Organic electroluminescent devices with a vacuum-deposited Lewis-acid-doped hole-injecting layer [J].

Endo, J ;

Matsumoto, T ;

Kido, J .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 2002, 41 (3B) :L358-L360

[6] Red electrophosphorescence from polymer doped with iridium complex [J].

Gong, X ;

Ostrowski, JC ;

Bazan, GC ;

Moses, D ;

Heeger, AJ .

APPLIED PHYSICS LETTERS, 2002, 81 (20) :3711-3713

[7] Organic light-emitting diodes using 3- or 5-hydroxyflavone-metal complexes [J].

Hamada, Y ;

Sano, T ;

Fujii, H ;

Nishio, Y ;

Takahashi, H ;

Shibata, K .

APPLIED PHYSICS LETTERS, 1997, 71 (23) :3338-3340

[8] Very high-efficiency and low voltage phosphorescent organic light-emitting diodes based on a p-i-n junction [J].

He, GF ;

Schneider, O ;

Qin, DS ;

Zhou, X ;

Pfeiffer, M ;

Leo, K .

JOURNAL OF APPLIED PHYSICS, 2004, 95 (10) :5773-5777

[9] 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

[10] Low roll-off of efficiency at high current density in phosphorescent organic light emitting diodes [J].

Kang, Jae-Wook ;

Lee, Se-Hyung ;

Park, Hyung-Dol ;

Jeong, Won-Ik ;

Yoo, Kyung-Mo ;

Park, Young-Seo ;

Kim, Jang-Joo .

APPLIED PHYSICS LETTERS, 2007, 90 (22)

← 1 2 3 →