Activation of carbon nanotube emitters by using supercritical carbon dioxide fluids with propyl alcohol

Po-Tsun Liu; C. T. Tsai; T. C. Chang; K. T. Kin; P. L. Chang; C. M. Chen; H. F. Cheng

doi:10.1149/1.2170484

Activation of carbon nanotube emitters by using supercritical carbon dioxide fluids with propyl alcohol

Po-Tsun Liu^*, C. T. Tsai, T. C. Chang, K. T. Kin, P. L. Chang, C. M. Chen, H. F. Cheng

^*Corresponding author for this work

National Chiao Tung University

Research output: Contribution to journal › Article

9 Scopus citations

Abstract

This paper explores the application of supercritical carbon dioxide fluids on the field emission enhancement for vertically aligned carbon nanotubes. The typical heating process cannot effectively activate the deionized-water-rinsed carbon nanotube emitters, exhibiting poorer field emission performance, due to residual moisture uptake in the carbon nanotubes. In contrast, the field emission enhancement can be achieved significantly by applying the supercritical carbon dioxide fluids associated with 3 to 9 vol % propyl alcohol. It is found the cosolvent propyl alcohol plays a critical role in the activation efficiency of supercritical carbon dioxide fluids. A physical model is also deduced to clarify the observation.

Original language	English
Journal	Electrochemical and Solid-State Letters
Volume	9
Issue number	4
DOIs	https://doi.org/10.1149/1.2170484
State	Published - 28 Feb 2006

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title = "Activation of carbon nanotube emitters by using supercritical carbon dioxide fluids with propyl alcohol",

abstract = "This paper explores the application of supercritical carbon dioxide fluids on the field emission enhancement for vertically aligned carbon nanotubes. The typical heating process cannot effectively activate the deionized-water-rinsed carbon nanotube emitters, exhibiting poorer field emission performance, due to residual moisture uptake in the carbon nanotubes. In contrast, the field emission enhancement can be achieved significantly by applying the supercritical carbon dioxide fluids associated with 3 to 9 vol % propyl alcohol. It is found the cosolvent propyl alcohol plays a critical role in the activation efficiency of supercritical carbon dioxide fluids. A physical model is also deduced to clarify the observation.",

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AU - Liu, Po-Tsun

AU - Tsai, C. T.

AU - Chang, T. C.

AU - Kin, K. T.

AU - Chang, P. L.

AU - Chen, C. M.

AU - Cheng, H. F.

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AB - This paper explores the application of supercritical carbon dioxide fluids on the field emission enhancement for vertically aligned carbon nanotubes. The typical heating process cannot effectively activate the deionized-water-rinsed carbon nanotube emitters, exhibiting poorer field emission performance, due to residual moisture uptake in the carbon nanotubes. In contrast, the field emission enhancement can be achieved significantly by applying the supercritical carbon dioxide fluids associated with 3 to 9 vol % propyl alcohol. It is found the cosolvent propyl alcohol plays a critical role in the activation efficiency of supercritical carbon dioxide fluids. A physical model is also deduced to clarify the observation.

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