Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electrical Transport Property of ZnO Thin Films in High H2 Pressure up
  to 20 bar   We have investigated the H2 pressure-dependent (from vacuum to 20 bar)
current-voltage characteristics of ZnO thin films prepared by spin coating
method. The gas pressure effect on conductance (G) was subtracted using He gas.
The G increased as applying 2 bar of H2 pressure, and then it monotonously
decreased with the further increment of H2 pressure. Using X-ray diffraction
patterns and X-ray photoelectron spectroscopy before and after H2 exposure, we
found that the H2 spillover effect plays an important role in the variation of
G of ZnO film.

31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
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The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
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The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys