Carbon nanotube modified electrodes for enhanced brightness in organic light emitting devices

A. R. Inigo; J. M. Underwood; S. R. P. Silva

doi:10.1016/j.carbon.2011.05.053

Carbon nanotube modified electrodes for enhanced brightness in organic light emitting devices

A. R. Inigo, J. M. Underwood, S. R. P. Silva

Pure And Applied Chemistry

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

Acid oxidised multiwall carbon nanotubes (COOH-MWCNT) have been introduced as a hole injection buffer layer in an organic light emitting diodes (OLED). We show that the OLED with COOH-MWCNT as a buffer layer provides higher brightness with lower operating voltages. The addition of a COOH-MWCNT buffer layer has enabled a further increase in the brightness of our OLED devices operating in excess of 20,000 cd/m(2) due to enhanced hole injection by several orders of magnitude. The increase in current injection and brightness does not alter the optical emission spectrum at different operating voltages in these devices. A model is proposed to explain this increase in current injection and brightness based on the modified electron energy band alignment. (C) 2011 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	4211-4217
Number of pages	7
Journal	Carbon
Volume	49
Issue number	13
DOIs	https://doi.org/10.1016/j.carbon.2011.05.053
Publication status	Published - Nov 2011

Keywords

carbon nanotube
modified electrodes
enhanced brightness
organic
light emitting devices

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10.1016/j.carbon.2011.05.053

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title = "Carbon nanotube modified electrodes for enhanced brightness in organic light emitting devices",

abstract = "Acid oxidised multiwall carbon nanotubes (COOH-MWCNT) have been introduced as a hole injection buffer layer in an organic light emitting diodes (OLED). We show that the OLED with COOH-MWCNT as a buffer layer provides higher brightness with lower operating voltages. The addition of a COOH-MWCNT buffer layer has enabled a further increase in the brightness of our OLED devices operating in excess of 20,000 cd/m(2) due to enhanced hole injection by several orders of magnitude. The increase in current injection and brightness does not alter the optical emission spectrum at different operating voltages in these devices. A model is proposed to explain this increase in current injection and brightness based on the modified electron energy band alignment. (C) 2011 Elsevier Ltd. All rights reserved.",

keywords = "carbon nanotube, modified electrodes, enhanced brightness, organic, light emitting devices",

author = "Inigo, {A. R.} and Underwood, {J. M.} and Silva, {S. R. P.}",

year = "2011",

month = nov,

doi = "10.1016/j.carbon.2011.05.053",

language = "English",

volume = "49",

pages = "4211--4217",

journal = "Carbon",

issn = "0008-6223",

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TY - JOUR

T1 - Carbon nanotube modified electrodes for enhanced brightness in organic light emitting devices

AU - Inigo, A. R.

AU - Underwood, J. M.

AU - Silva, S. R. P.

PY - 2011/11

Y1 - 2011/11

N2 - Acid oxidised multiwall carbon nanotubes (COOH-MWCNT) have been introduced as a hole injection buffer layer in an organic light emitting diodes (OLED). We show that the OLED with COOH-MWCNT as a buffer layer provides higher brightness with lower operating voltages. The addition of a COOH-MWCNT buffer layer has enabled a further increase in the brightness of our OLED devices operating in excess of 20,000 cd/m(2) due to enhanced hole injection by several orders of magnitude. The increase in current injection and brightness does not alter the optical emission spectrum at different operating voltages in these devices. A model is proposed to explain this increase in current injection and brightness based on the modified electron energy band alignment. (C) 2011 Elsevier Ltd. All rights reserved.

AB - Acid oxidised multiwall carbon nanotubes (COOH-MWCNT) have been introduced as a hole injection buffer layer in an organic light emitting diodes (OLED). We show that the OLED with COOH-MWCNT as a buffer layer provides higher brightness with lower operating voltages. The addition of a COOH-MWCNT buffer layer has enabled a further increase in the brightness of our OLED devices operating in excess of 20,000 cd/m(2) due to enhanced hole injection by several orders of magnitude. The increase in current injection and brightness does not alter the optical emission spectrum at different operating voltages in these devices. A model is proposed to explain this increase in current injection and brightness based on the modified electron energy band alignment. (C) 2011 Elsevier Ltd. All rights reserved.

KW - carbon nanotube

KW - modified electrodes

KW - enhanced brightness

KW - organic

KW - light emitting devices

U2 - 10.1016/j.carbon.2011.05.053

DO - 10.1016/j.carbon.2011.05.053

M3 - Article

SN - 0008-6223

VL - 49

SP - 4211

EP - 4217

JO - Carbon

JF - Carbon

IS - 13

ER -

Carbon nanotube modified electrodes for enhanced brightness in organic light emitting devices

Abstract

Keywords

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