Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fast response deep-ultraviolet photodetector based on high-quality
  single-crystalline CVD diamond   A high-performance fast response deep ultraviolet (UV) photodetectors with
interdigitated Ti/Au planar electrodes using a lithography technology has
fabricated on homoepitaxial diamond. The device shows a high ultraviolet
photocurrent at 213 nm, which is eight orders of magnitude higher than the dark
current at the bias voltages of 30 V. In addition, the time-resolved
photoresponse measurements using a mechanical method and a pulsed 213 nm laser
show that a good cycling, low persistent photoconductivity, and transient
time-resolved response of up to 2.4 ns.

5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
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The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
7
The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
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The categories of this paper are: econ
28
The categories of this paper are: alg-geom
35
The categories of this paper are: mtrl-th