Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Transition Energy in Strong and Weak Confinement of Type-I Spherical
  Core-shell Quantum Dots   In this paper, we present a mathematical approach in estimating transition
energy of type-I core-shell quantum dots (CSQDs) in strong and weak confinement
of charge carriers within the core materials. We will do this by using
effective-mass approximation together with a single-band model. The effects of
potential step of conduction band and valence band on confinement strength will
be discussed. It can be seen at the end of this paper that for a same size
CSQDs, CSQDs with bigger potential steps will have stronger carriers
confinement and with more localized excitons.

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The categories of this paper are: atom-ph
19
The categories of this paper are: eess
2
The categories of this paper are: math
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th