Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Effects of hole self-trapping by polarons on transport and negative bias
  illumination stress in amorphous-IGZO   The effects of hole injection in amorphous-IGZO is analyzed by means of
first-principles calculations. The injection of holes in the valence band tail
states leads to their capture as a polaron, with high self-trapping energies
(from 0.44 to 1.15 eV). Once formed, they mediate the formation of peroxides
and remain localized close to the hole injection source due to the presence of
a large diffusion energy barrier (of at least 0.6eV). Their diffusion mechanism
can be mediated by the presence of hydrogen. The capture of these holes is
correlated with the low off-current observed for a-IGZO transistors, as well
as, with the difficulty to obtain a p-type conductivity. The results further
support the formation of peroxides as being the root cause of Negative bias
illumination stress (NBIS). The strong self-trapping substantially reduces the
injection of holes from the contact and limits the creation of peroxides from a
direct hole injection. In presence of light, the concentration of holes
substantially rises and mediates the creation of peroxides, responsible for
NBIS.

3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
26
The categories of this paper are: bayes-an
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph