Enhanced luminance of MEH-PPV based PLEDs using single walled carbon nanotube composite as an electron transporting layer

被引：19

作者：

Singh, Inderpreet ^{[1
]}

Madhwal, Devinder ^{[1
]}

Verma, A. ^{[1
]}

Kumar, A. ^{[1
]}

Rait, S. ^{[1
]}

Kaur, I. ^{[2
]}

Bharadwaj, L. M. ^{[2
]}

Bhatia, C. S. ^{[3
]}

Bhatnagar, P. K. ^{[1
]}

Mathur, P. C. ^{[1
]}

机构：

[1] Univ Delhi, Dept Elect Sci, Mat Lab, New Delhi 110021, India

[2] Cent Sci Instruments Org, Sect 30, Chandigarh, India

[3] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117548, Singapore

来源：

JOURNAL OF LUMINESCENCE | 2010年 / 130卷 / 11期

关键词：

PLEDs; Luminance; Polymer-SWCNT composites; Electron transporting layer; LIGHT-EMITTING-DIODES; ORGANIC ELECTROLUMINESCENT DEVICES; POLYMER; VINYLENE); STABILITY; EMISSION;

D O I：

10.1016/j.jlumin.2010.06.011

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An efficient electron transporting layer (ETL) based on single walled carbon nanotube (SWCNT) composites has been developed for poly [2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) based orange polymer light emitting diodes (PLEDs) and its effect on the performance of PLEDs has been examined. It is observed that with increase in SWCNT concentration, in ETL, the luminance and luminous efficiency of the PLEDs increase (about 5 times increase in luminance is observed at 5% w/w SWCNT concentration). The SWCNTs present in the MEH-PPV ETL boost the mobility of electrons injected from the cathode towards the emissive layer by establishing highly conducting percolation paths. This balances the concentration of holes and electrons in the emissive layer, which leads to enhanced emission from the PLEDs. (c) 2010 Elsevier B.V. All rights reserved.

引用

页码：2157 / 2160

页数：4

共 29 条

[1] Electronic interaction between photoexcited poly(p-phenylene vinylene) and carbon nanotubes [J].

Ago, H ;

Shaffer, MSP ;

Ginger, DS ;

Windle, AH ;

Friend, RH .

PHYSICAL REVIEW B, 2000, 61 (03) :2286-2290

[2] 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

[3] Carbon nanotubes-semiconductor networks for organic electronics: The pickup stick transistor [J].

Bo, XZ ;

Lee, CY ;

Strano, MS ;

Goldfinger, M ;

Nuckolls, C ;

Blanchet, GB .

APPLIED PHYSICS LETTERS, 2005, 86 (18) :1-3

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

BRAUN, D ;

HEEGER, AJ .

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

[5] Electroluminescent behaviours of polymer/organic heterostructure devices [J].

Choi, KH ;

Hwang, DH ;

Lee, HM ;

Do, LM ;

Zyung, T .

SYNTHETIC METALS, 1998, 96 (02) :123-126

[6] Percolation-dominated conductivity in a conjugated-polymer-carbon-nanotube composite [J].

Coleman, JN ;

Curran, S ;

Dalton, AB ;

Davey, AP ;

McCarthy, B ;

Blau, W ;

Barklie, RC .

PHYSICAL REVIEW B, 1998, 58 (12) :R7492-R7495

[7]

Curran SA, 1998, ADV MATER, V10, P1091, DOI 10.1002/(SICI)1521-4095(199810)10:14<1091::AID-ADMA1091>3.0.CO

[8]

2-L

[9] Enhanced brightness in organic light-emitting diodes using a carbon nanotube composite as an electron-transport layer [J].

Fournet, P ;

Coleman, JN ;

Lahr, B ;

Drury, A ;

Blau, WJ ;

O'Brien, DF ;

Hörhold, HH .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (02) :969-975

[10] Photoinduced electron transfer from conjugated polymers to CdSe nanocrystals [J].

Ginger, DS ;

Greenham, NC .

PHYSICAL REVIEW B, 1999, 59 (16) :10622-10629

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