Using oxidation to increase the electrical conductivity of carbon nanotube electrodes

Hosea Tantang; Jie Yi Ong; Chen Lung Loh; Xiaochen Dong; Peng Chen; Yuan Chen; Xiao Hu; Lay Poh Tan; Lain Jong Li

doi:10.1016/j.carbon.2009.03.005

Using oxidation to increase the electrical conductivity of carbon nanotube electrodes

Hosea Tantang, Jie Yi Ong, Chen Lung Loh, Xiaochen Dong, Peng Chen, Yuan Chen, Xiao Hu, Lay Poh Tan, Lain Jong Li^*

^*Corresponding author for this work

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

112 Scopus citations

Abstract

Recent studies have demonstrated that significantly low sheet resistance (Rs) (<100 Ω/sq; comparable to ITO) were achieved in single-walled carbon nanotube (SWCNT) films treated with HNO₃ followed by thionyl chloride. Here we show that H₂SO₄ can effectively reduce the Rs of SWCNT electrodes. H₂SO₄ treatment generates defects (COOH and SO₃H functionalities) on SWCNTs and the produced chemical functionalities are beneficial for enhancing the electrical conductivity in SWCNT electrodes. It is plausible that the H₂SO₄ p-dopes the SWCNTs and the attachment of chemical functionalities helps to stabilize p-doping owing to their electron-deficient property.

Original language	English (US)
Pages (from-to)	1867-1870
Number of pages	4
Journal	Carbon
Volume	47
Issue number	7
DOIs	https://doi.org/10.1016/j.carbon.2009.03.005
State	Published - Jun 2009
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Materials Science

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10.1016/j.carbon.2009.03.005

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title = "Using oxidation to increase the electrical conductivity of carbon nanotube electrodes",

abstract = "Recent studies have demonstrated that significantly low sheet resistance (Rs) (<100 Ω/sq; comparable to ITO) were achieved in single-walled carbon nanotube (SWCNT) films treated with HNO3 followed by thionyl chloride. Here we show that H2SO4 can effectively reduce the Rs of SWCNT electrodes. H2SO4 treatment generates defects (COOH and SO3H functionalities) on SWCNTs and the produced chemical functionalities are beneficial for enhancing the electrical conductivity in SWCNT electrodes. It is plausible that the H2SO4 p-dopes the SWCNTs and the attachment of chemical functionalities helps to stabilize p-doping owing to their electron-deficient property.",

author = "Hosea Tantang and Ong, {Jie Yi} and Loh, {Chen Lung} and Xiaochen Dong and Peng Chen and Yuan Chen and Xiao Hu and Tan, {Lay Poh} and Li, {Lain Jong}",

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T1 - Using oxidation to increase the electrical conductivity of carbon nanotube electrodes

AU - Tantang, Hosea

AU - Ong, Jie Yi

AU - Loh, Chen Lung

AU - Dong, Xiaochen

AU - Chen, Peng

AU - Chen, Yuan

AU - Hu, Xiao

AU - Tan, Lay Poh

AU - Li, Lain Jong

PY - 2009/6

Y1 - 2009/6

N2 - Recent studies have demonstrated that significantly low sheet resistance (Rs) (<100 Ω/sq; comparable to ITO) were achieved in single-walled carbon nanotube (SWCNT) films treated with HNO3 followed by thionyl chloride. Here we show that H2SO4 can effectively reduce the Rs of SWCNT electrodes. H2SO4 treatment generates defects (COOH and SO3H functionalities) on SWCNTs and the produced chemical functionalities are beneficial for enhancing the electrical conductivity in SWCNT electrodes. It is plausible that the H2SO4 p-dopes the SWCNTs and the attachment of chemical functionalities helps to stabilize p-doping owing to their electron-deficient property.

AB - Recent studies have demonstrated that significantly low sheet resistance (Rs) (<100 Ω/sq; comparable to ITO) were achieved in single-walled carbon nanotube (SWCNT) films treated with HNO3 followed by thionyl chloride. Here we show that H2SO4 can effectively reduce the Rs of SWCNT electrodes. H2SO4 treatment generates defects (COOH and SO3H functionalities) on SWCNTs and the produced chemical functionalities are beneficial for enhancing the electrical conductivity in SWCNT electrodes. It is plausible that the H2SO4 p-dopes the SWCNTs and the attachment of chemical functionalities helps to stabilize p-doping owing to their electron-deficient property.

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U2 - 10.1016/j.carbon.2009.03.005

DO - 10.1016/j.carbon.2009.03.005

M3 - Letter

AN - SCOPUS:64749096335

SN - 0008-6223

VL - 47

SP - 1867

EP - 1870

JO - Carbon

JF - Carbon

IS - 7

ER -

Using oxidation to increase the electrical conductivity of carbon nanotube electrodes

Abstract

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