Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gate-tunable diode and photovoltaic effect in an organic-2D layered
  material p-n junction   The semiconducting p-n junction is a simple device structure with great
relevance for electronic and optoelectronic applications. The successful
integration of low-dimensional materials in electronic circuits has opened the
way forward for producing gate-tunable p-n junctions. In that context, here we
present an organic (Cu-phthalocyanine)-2D layered material (MoS2) hybrid p-n
junction with both gate-tunable diode characteristics and photovoltaic effect.
Our proof-of-principle devices show multifunctional properties with diode
rectifying factors of up to 10^4, while under light exposure they exhibit
photoresponse with a measured external quantum efficiency of ~ 11 %. As for
their photovoltaic properties, we found open circuit voltages of up to 0.6 V
and optical-to-electrical power conversion efficiency of 0.7 %. The extended
catalogue of known organic semiconductors and two-dimensional materials offer
the prospect for tailoring the properties and the performance of the resulting
devices, making organic-2D p-n junctions promising candidates for future
technological applications.

25
The categories of this paper are: patt-sol
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn