Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study on the Fermi level of microstructured Silicon with impurities
  introduced by chalcogenides and their affect on solar cell efficiency   Microstructured Silicon, which is obtained by irradiating the surface of a
Silicon wafer with femtosecond laser pulses under certain circumstances, has
unusual optical properties such as the strong absorption of light with
wavelength from 0.25{\mu}m to 17{\mu}m. So it holds great promise in the
intermediate band solar cell (IBSC). Some articles have discussed the
electronic structure associating with simple substitutional impurities in
Silicon introduced by chalcogenides. And on this basis, after high temperature
annealing treatment, we establish the mode of impurity levels of
microstructured Silicon introduced by sulfur and oxygen. Using generalized
statistics of multi-level,we analyze the probability of electronic in all local
energy levels and the relationship among Fermi level, temperature and the
density of impurities. Then the theoretical conversion efficiency of the
corresponding IBSC is discussed with the Detailed Balance Theory. And the issue
of making high efficiency solar cells based on femtosecond laser
microstructured Silicon is discussed in detail.

11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
16
The categories of this paper are: stat
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
34
The categories of this paper are: chem-ph
26
The categories of this paper are: bayes-an
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
14
The categories of this paper are: math-ph
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