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题名: Flexible logic circuits based on top-gate thin film transistors with printed semiconductor carbon nanotubes and top electrodes
作者: Xu, WW (许威威) ; Liu, Z (刘振) ; Zhao, JW (赵建文) ; Xu, WY (徐文亚) ; Gu, WB (顾唯兵) ; Zhang, X (张祥) ; Qian, L (钱龙) ; Cui, Z (崔铮)
通讯作者: Zhao, JW (赵建文)
关键词: LIGHT ; FABRICATION ; OXIDE
刊名: NANOSCALE
发表日期: 2014
卷: 6, 期:24, 页:14891-14897
收录类别: SCI
英文摘要:
In this report printed thin film transistors and logic circuits on flexible 
 
substrates are reported. The top-gate thin film transistors were made of the sorted 
 
semiconducting single-walled carbon nanotubes (sc-SWCNTs) ink as channel material 
 
and printed silver lines as top electrodes and interconnect. 5 nm HfOx thin films 
 
pre-deposited on PET substrates by atomic layer deposition (ALD) act as the adhesion 
 
layers to significantly improve the immobilization efficiency of sc-SWCNTs and 
 
environmental stability. The immobilization mechanism was investigated in detail. 
 
The flexible partially-printed top-gate SWCNT TFTs display ambipolar characteristics 
 
with slightly strong p-type when using 50 nm HfOx thin films as dielectric layer, as 
 
well as the encapsulation layer by atomic layer deposition (ALD) at 120 degrees C. 
 
The hole mobility, on/off ratio and subthreshold swing (SS) are similar to 46.2 cm
 
(2) V-1 s(-1), 10(5) and 109 mV per decade, respectively. Furthermore, partially-
 
printed TFTs show small hysteresis, low operating voltage (2 V) and high stability 
 
in air. Flexible partially-printed inverters show good performance with voltage gain 
 
up to 33 with 1.25 V supply voltage, and can work at 10 kHz. The frequency of 
 
flexible partially-printed five-stage ring oscillators can reach 1.7 kHz at supply 
 
voltages of 2 V with per stage delay times of 58.8 mu s. This work paves a way to 
 
achieve printed SWCNT advanced logic circuits and systems on flexible substrates.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/1856
Appears in Collections:印刷电子学部_崔铮团队_期刊论文

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Recommended Citation:
Xu, WW ,Liu, Z ,Zhao, JW ,et al. Flexible logic circuits based on top-gate thin film transistors with printed semiconductor carbon nanotubes and top electrodes[J]. NANOSCALE,2014,6(24):14891-14897.
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