Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 2D Tunnel Field Effect Transistors (FETs) with a Stable
  Charge-Transfer-Type p$^+$-WSe$_2$ Source   Two-dimensional (2D) materials are highly promising for tunnel field effect
transistors (TFETs) with low subthreshold swing and high drive current because
the shorter tunnel distance and strong gate controllability can be expected
from the van der Waals gap distance and the atomically sharp heterointerface
formed independently of lattice matching. However, the common problem for 2D-2D
TFETs is the lack of highly doped 2D materials with the high process stability
as the sources. In this study, we have found that p+-WSe2 doped by charge
transfer from a WOx surface oxide layer can be stabilized by transferring it
onto a h-BN substrate. Using this p$^+$-WSe$_2$ as a source, we fabricate
all-solid-state 2D-2D heterostructure TFETs with an Al2O3 top gate insulator,
i.e., type-II p$^+$-WSe$_2$ /MoS$_2$ and type-III p$^+$-WSe$_2$ /WSe$_2$. The
band-to-band tunneling and negative differential resistance trends are clearly
demonstrated at low temperatures. This work suggests that high doped 2D crystal
of the charge transfer type is an excellent choice as sources for TFETs.

7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio