Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Atomic Scale Investigation of Dye Sensitized Solar Cells_Interface
  Structure and Dynamics   Dye-sensitized solar cells (DSC), built upon organic/inorganic hybrid
materials, are promising third generation solar cells, which attract wide
attentions due to their low-cost, flexibility and environment-friendly
properties. We review recent progresses in DSC research, focusing on
atomic-scale investigations of the interface electronic structures and
dynamical processes, including dye adsorption structure onto TiO2, ultrafast
electron injection, hot-electron injection, multiple-exciton generation and
electron-hole recombination. We briefly summarize advanced experimental
techniques and theoretical approaches investigating these interface electronic
properties and dynamics, and then introduce progressive achievements in the
photovoltaic device optimization based on insights obtained from atomic scale
investigations. Finally, some challenges and opportunities for further
improvement of dye solar cells are presented.

1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex