Luca Nela, Jianshi Tang, et al.
Nano Letters
One key challenge of realizing practical high-performance electronic devices based on single-walled carbon nanotubes is to produce electronically pure nanotube arrays with both a minuscule and uniform inter-tube pitch for sufficient device-packing density and homogeneity. Here we develop a method in which the alternating voltage-fringing electric field formed between surface microelectrodes and the substrate is utilized to assemble semiconducting nanotubes into well-aligned, ultrahigh-density and submonolayered arrays, with a consistent pitch as small as 21±6 nm determined by a self-limiting mechanism, based on the unique field focusing and screening effects of the fringing field. Field-effect transistors based on such nanotube arrays exhibit record high device transconductance (>50 μS μm-1) and decent on current per nanotube (∼1μA per tube) together with high on/off ratios at a drain bias of -1V.
Luca Nela, Jianshi Tang, et al.
Nano Letters
Jianshi Tang, Qing Cao, et al.
Nature Electronics
Shu Jen Han, Jianshi Tang, et al.
Nature Nanotechnology
James B. Hannon, Hongsik Park, et al.
BCTM 2014