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Fabrication of stable n-type thin-film transistor with Cs encapsulated single-walled carbon nanotubes

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3 Author(s)
Toshiaki Kato ; Department of Electronic Engineering, Tohoku University, Sendai, 980-8579, Japan ; Rikizo Hatakeyama ; Yosuke Osanai

Stable n-type thin film transistors (TFTs) are fabricated with Cs encapsulated single-walled carbon nanotubes (Cs@SWNTs). The transport property of SWNTs-TFTs clearly changes from p- to n-type characteristic after the Cs plasma irradiation. Based on the systematic investigations, it is revealed that there is an optimum ion energy for the effective Cs encapsulation, which is around 50 eV. Furthermore, it is also found that the n-type feature is stable even in water and high temperature (≤ 400 °C) conditions. This very stable n-type TFTs is important for the practical application of SWNTs-based thin film electronics.

Published in:

Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on

Date of Conference:

15-18 Aug. 2011