Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High-Responsivity Photodetection by Self-Catalyzed Phase-Pure P-GaAs
  Nanowire   Defects are detrimental for optoelectronics devices, such as stacking faults
can form carrier-transportation barriers, and foreign impurities (Au) with
deep-energy levels can form carrier traps and non-radiative recombination
centers. Here, we first developed self-catalyzed p-type GaAs nanowires (NWs)
with pure zinc blende (ZB) structure, and then fabricated photodetector made by
these NWs. Due to absence of stacking faults and suppression of large amount of
defects with deep energy levels, the photodetector exhibits room-temperature
high photo responsivity of 1.45 x 105 A W^-1 and excellent specific detectivity
(D*) up to 1.48 x 10^14 Jones for low-intensity light signal of wavelength
632.8 nm, which outperforms previously reported NW-based photodetectors. These
results demonstrate that these self-catalyzed pure-ZB GaAs NWs to be promising
candidates for optoelectronics applications.

12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
13
The categories of this paper are: quant-ph
6
The categories of this paper are: astro-ph
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
9
The categories of this paper are: nlin
21
The categories of this paper are: adap-org
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys