Recycling Strategy for Fabricating Low-Cost and High-Performance Carbon Nanotube TFT Devices
2017
Yu, Xiaoqin | Liu, Dan | Kang, Lixing | Yang, Yi | Zhang, Xiaopin | Lv, Qianjin | Huxiaoxuan, | Jin, Hehua | Song, Qijun | Zhang, Jin | Li, Qingwen
High-purity semiconducting single-walled carbon nanotubes (s-SWNTs) can be obtained by conjugated polymer wrapping. However, further purification of sorted s-SWNTs and high costs of raw materials are still challenges to practical applications. It is inevitable that a lot of polymers still cover the surface of s-SWNTs after separation, and the cost of the polymer is relatively higher than that of SWNTs. Here, we demonstrated a facile isolated process to improve the quality of s-SWNT solutions and films significantly. Compared with the untreated s-SWNTs, the contact resistance between the s-SWNT and the electrode is reduced by 20 times, and the thin-film transistors show 300% enhancement of current density. In this process, most of the polymers can be recycled and reused directly without any purification, which can greatly decrease the cost for s-SWNT separation. The results presented herein demonstrate a new scalable and low-cost approach for large-scale application of s-SWNTs in the electronics industry.
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