Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High performance n-doped carbon nanotube field-effect transistors   We describe a robust technique for the fabrication of high performance
vertically scaled n-doped field-effect transistors from large band gap carbon
nanotubes. These devices have a tunable threshold voltage in the
technologically relevant range (-1.3V < V_th < 0.5V) and can carry up to 5-6
muA of current in the on-state. We achieve such performance by exposure to
potassium (K) vapor and device annealing in high vacuum. The treatment has a
two-fold effect to: (i) controllably shift V_th toward negative gate biases via
bulk doping of the nanotube (up to about 0.6e/nm), and (ii) increase the
on-current by 1-2 orders of magnitude. This current enhancement is achieved by
lowering external device resistance due to more intimate contact between K
metal and doped nanotube channel in addition to potential reduction of the
Schottky barrier height at the contact.

20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
1
The categories of this paper are: cs
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
27
The categories of this paper are: comp-gas
25
The categories of this paper are: patt-sol
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
11
The categories of this paper are: hep-lat
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
18
The categories of this paper are: econ