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 1 |
Fingerprint
Keywords
- MEH-PPV polymer
- Polymer light-emitting diode
- Single-walled carbon nanotube
- Time-of-flight measurement
ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
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, 01.01.2006, p. 146-149.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Blending MEH-PPV conjugate polymers with single-walled carbon nanotubes for polymer light-emitting diodes
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 - 2006/1/1
Y1 - 2006/1/1
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.
KW - MEH-PPV polymer
KW - Polymer light-emitting diode
KW - Single-walled carbon nanotube
KW - Time-of-flight measurement
UR - http://www.scopus.com/inward/record.url?scp=32044464560&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=32044464560&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:32044464560
VL - 48
SP - 146
EP - 149
JO - Journal of the Korean Physical Society
JF - Journal of the Korean Physical Society
SN - 0374-4884
IS - 1
ER -