Journal
NANOTECHNOLOGY
Volume 23, Issue 50, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/23/50/505203
Keywords
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Funding
- Nano Material Technology Development Program [14035195]
- Basic Science Research Program [2010-0024875]
- Priority Research Center Program [2012029029]
- National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology
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We present results for the transfer characteristics of carbon nanotube thin-film transistors (CNT-TFTs) that utilize single-walled carbon nanotube thin-films prepared by direct spray-coating on the substrate. By varying the number of spray-coatings (N-sp) and the concentration of nanotubes in solution (C-NT), it was possible to control the conductivity of the spray-coated nanotube thin-film from 129 to 0.1 k Omega/square. Also, by introducing stripes into the channel of the CNT-TFT, and thereby reducing the number of metallic percolation paths between source and drain, it was possible to enhance the on/off current ratio 1000-fold, from 10 to 10(4), demonstrating that it may be possible to utilize spray-coating as a method to fabricate CNT-TFTs for large area switching array applications.
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