Photovoltaic Materials, Devices, and Technologies

Multimodal probing of oxygen and water interaction with metallic and semiconducting carbon nanotube networks under ultraviolet irradiation

[+] Author Affiliations
Eric S. Muckley

Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831–6496, United States

The Bredesen Center for Interdisciplinary Research and Graduate Education, 444 Greve Hall, 821 Volunteer Boulevard, Knoxville, Tennessee 37996–3394, United States

Anthony J. Nelson

Virginia Tech, Norris Hall, Room 333N, 495 Old Turner Street, Blacksburg, Virginia 24061, United States

Christopher B. Jacobs, Ilia N. Ivanov

Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831–6496, United States

J. Photon. Energy. 6(2), 025506 (Jun 01, 2016). doi:10.1117/1.JPE.6.025506
History: Received April 4, 2016; Accepted May 9, 2016
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Abstract.  Interaction between ultraviolet (UV) light and carbon nanotube (CNT) networks plays a central role in gas adsorption, sensor sensitivity, and stability of CNT-based electronic devices. To determine the effect of UV light on sorption kinetics and resistive gas/vapor response of different CNT networks, films of semiconducting single-wall nanotubes (s-SWNTs), metallic single-wall nanotubes, and multiwall nanotubes were exposed to O2 and H2O vapor in the dark and under UV irradiation. Changes in film resistance and mass were measured in situ. In the dark, resistance of metallic nanotube networks increases in the presence of O2 and H2O, whereas resistance of s-SWNT networks decreases. UV irradiation decreases the resistance of metallic nanotube networks in the presence of O2 and H2O and increases the gas/vapor sensitivity of s-SWNT networks by nearly a factor of 2 compared to metallic nanotube networks. s-SWNT networks show evidence of delamination from the gold-plated quartz crystal microbalance crystal, possibly due to preferential adsorption of O2 and H2O on gold. UV irradiation increases the sensitivity of all CNT networks to O2 and H2O by an order of magnitude, which demonstrates the importance of UV light for enhancing response and lowering detection limits in CNT-based gas/vapor sensors.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Eric S. Muckley ; Anthony J. Nelson ; Christopher B. Jacobs and Ilia N. Ivanov
"Multimodal probing of oxygen and water interaction with metallic and semiconducting carbon nanotube networks under ultraviolet irradiation", J. Photon. Energy. 6(2), 025506 (Jun 01, 2016). ; http://dx.doi.org/10.1117/1.JPE.6.025506


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