Blending MEH-PPV conjugate polymers with single-walled carbon nanotubes for polymer light-emitting diodes

Sung Pyo Lee; H. Choi; Kyu Won Lee; Kyu Hyun Mo; Jae Won Jang; Eunmo Lee; In Mook Kim; Cheol Eui Lee

Blending MEH-PPV conjugate polymers with single-walled carbon nanotubes for polymer light-emitting diodes

Sung Pyo Lee, H. Choi, Kyu Won Lee, Kyu Hyun Mo, Jae Won Jang, Eunmo Lee, In Mook Kim, Cheol Eui Lee

Department of Physics

Research output: Contribution to journal › Review article › peer-review

13 Citations (Scopus)

Abstract

We report the effects of blending poly[2-methoxy-5-(2′-ethyl- hexyloxy)-p-phenylene-vinylene] (MEH-PPV) conjugate polymers with single-walled carbon nanotubes (SWNTs). The blend ratio of MEH-PPV/SWNT composites for polymer light-emitting diodes (PLEDs) ranged from 0 wt% to 1 wt% SWNTs. From time-of-flight (TOF) measurements, the electron mobility was observed to increase gradually with the weight percent of SWNTs while the hole mobility remained almost unchanged. According to the Poole-Frenkel model, an increase in the weight percent of SWNTs lowers the zero-field activation energy, suggesting that SWNTs effectively reduce the oxygen trap density. At a 0.2-wt% SWNTs concentration, the electron and the hole mobilities could be tuned for the highest external quantum efficiency.

Original language	English
Pages (from-to)	146-149
Number of pages	4
Journal	Journal of the Korean Physical Society
Volume	48
Issue number	1
Publication status	Published - 2006 Jan

Keywords

MEH-PPV polymer
Polymer light-emitting diode
Single-walled carbon nanotube
Time-of-flight measurement

ASJC Scopus subject areas

Physics and Astronomy(all)

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Blending MEH-PPV conjugate polymers with single-walled carbon nanotubes for polymer light-emitting diodes. / Lee, Sung Pyo; Choi, H.; Lee, Kyu Won; Mo, Kyu Hyun; Jang, Jae Won; Lee, Eunmo; Kim, In Mook; Lee, Cheol Eui.

In: Journal of the Korean Physical Society, Vol. 48, No. 1, 01.2006, p. 146-149.

Research output: Contribution to journal › Review article › peer-review

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title = "Blending MEH-PPV conjugate polymers with single-walled carbon nanotubes for polymer light-emitting diodes",

abstract = "We report the effects of blending poly[2-methoxy-5-(2′-ethyl- hexyloxy)-p-phenylene-vinylene] (MEH-PPV) conjugate polymers with single-walled carbon nanotubes (SWNTs). The blend ratio of MEH-PPV/SWNT composites for polymer light-emitting diodes (PLEDs) ranged from 0 wt% to 1 wt% SWNTs. From time-of-flight (TOF) measurements, the electron mobility was observed to increase gradually with the weight percent of SWNTs while the hole mobility remained almost unchanged. According to the Poole-Frenkel model, an increase in the weight percent of SWNTs lowers the zero-field activation energy, suggesting that SWNTs effectively reduce the oxygen trap density. At a 0.2-wt% SWNTs concentration, the electron and the hole mobilities could be tuned for the highest external quantum efficiency.",

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AU - Lee, Sung Pyo

AU - Choi, H.

AU - Lee, Kyu Won

AU - Mo, Kyu Hyun

AU - Jang, Jae Won

AU - Lee, Eunmo

AU - Kim, In Mook

AU - Lee, Cheol Eui

PY - 2006/1

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N2 - We report the effects of blending poly[2-methoxy-5-(2′-ethyl- hexyloxy)-p-phenylene-vinylene] (MEH-PPV) conjugate polymers with single-walled carbon nanotubes (SWNTs). The blend ratio of MEH-PPV/SWNT composites for polymer light-emitting diodes (PLEDs) ranged from 0 wt% to 1 wt% SWNTs. From time-of-flight (TOF) measurements, the electron mobility was observed to increase gradually with the weight percent of SWNTs while the hole mobility remained almost unchanged. According to the Poole-Frenkel model, an increase in the weight percent of SWNTs lowers the zero-field activation energy, suggesting that SWNTs effectively reduce the oxygen trap density. At a 0.2-wt% SWNTs concentration, the electron and the hole mobilities could be tuned for the highest external quantum efficiency.

AB - We report the effects of blending poly[2-methoxy-5-(2′-ethyl- hexyloxy)-p-phenylene-vinylene] (MEH-PPV) conjugate polymers with single-walled carbon nanotubes (SWNTs). The blend ratio of MEH-PPV/SWNT composites for polymer light-emitting diodes (PLEDs) ranged from 0 wt% to 1 wt% SWNTs. From time-of-flight (TOF) measurements, the electron mobility was observed to increase gradually with the weight percent of SWNTs while the hole mobility remained almost unchanged. According to the Poole-Frenkel model, an increase in the weight percent of SWNTs lowers the zero-field activation energy, suggesting that SWNTs effectively reduce the oxygen trap density. At a 0.2-wt% SWNTs concentration, the electron and the hole mobilities could be tuned for the highest external quantum efficiency.

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KW - Single-walled carbon nanotube

KW - Time-of-flight measurement

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