Efficient polymer light emitting diodes with metal fluoride/Al cathodes

被引：89

作者：

Yang, XH

Mo, YQ

Yang, W

Yu, G

Cao, Y ^{[1
]}

机构：

[1] S China Univ Technol, Inst Polymer Optoelect Mat & Devices, Guangzhou 510640, Peoples R China

[2] UNIAX Corp, Santa Barbara, CA 93117 USA

来源：

APPLIED PHYSICS LETTERS | 2001年 / 79卷 / 05期

关键词：

D O I：

10.1063/1.1389323

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We reported efficient polymer light emitting diodes with alkali and alkaline earth metal fluoride Al cathodes. The quantum efficiencies of these devices are more than two orders of magnitude higher than those in devices without fluoride layer, comparable to the best data reported with similar electroluminescent polymers. The mechanism of the metal fluoride/Al bilayer cathodes was also discussed based on photovoltaic, ac impedance, and photoluminescence efficiency measurement. (C) 2001 American Institute of Physics.

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页码：563 / 565

页数：3

相关论文

共 22 条

[1] PHOTOVOLTAIC AND PHOTOCONDUCTIVE PROPERTIES OF ALUMINUM POLY(P-PHENYLENE VINYLENE) INTERFACES [J].

ANTONIADIS, H ;

HSIEH, BR ;

ABKOWITZ, MA ;

JENEKHE, SA ;

STOLKA, M .

SYNTHETIC METALS, 1994, 62 (03) :265-271

[2] VISIBLE-LIGHT EMISSION FROM SEMICONDUCTING POLYMER DIODES [J].

BRAUN, D ;

HEEGER, AJ .

APPLIED PHYSICS LETTERS, 1991, 58 (18) :1982-1984

[3] LiF/Al cathodes and the effect of LiF thickness on the device characteristics and built-in potential of polymer light-emitting diodes [J].

Brown, TM ;

Friend, RH ;

Millard, IS ;

Lacey, DJ ;

Burroughes, JH ;

Cacialli, F .

APPLIED PHYSICS LETTERS, 2000, 77 (19) :3096-3098

[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]

Cao Y, 1998, ADV MATER, V10, P917, DOI 10.1002/(SICI)1521-4095(199808)10:12<917::AID-ADMA917>3.0.CO

[6]

2-K

[7] Ultrathin layer alkaline earth metals as stable electron-injecting electrodes for polymer light emitting diodes [J].

Cao, Y ;

Yu, G ;

Parker, ID ;

Heeger, AJ .

JOURNAL OF APPLIED PHYSICS, 2000, 88 (06) :3618-3623

[8]

CHOONG VE, 2000, APPL PHYS LETT, V76, P2152

[9] MEASUREMENT OF ABSOLUTE PHOTOLUMINESCENCE QUANTUM EFFICIENCIES IN CONJUGATED POLYMERS [J].

GREENHAM, NC ;

SAMUEL, IDW ;

HAYES, GR ;

PHILLIPS, RT ;

KESSENER, YARR ;

MORATTI, SC ;

HOLMES, AB ;

FRIEND, RH .

CHEMICAL PHYSICS LETTERS, 1995, 241 (1-2) :89-96

[10] Enhanced electron injection in organic electroluminescence devices using an Al/LiF electrode [J].

Hung, LS ;

Tang, CW ;

Mason, MG .

APPLIED PHYSICS LETTERS, 1997, 70 (02) :152-154