Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Does Singlet Fission Enhance the Performance of Organic Solar Cells?   Singlet fission, in which the optical spin-singlet exciton dissociates into
two low energy triplet excitons, has been proposed as a viable approach to
enhance the quantum efficiency of organic solar cells. We show that even when
singlet fission is occurring in the donor molecule, the electronic structure at
the donor$-$acceptor interface must satisfy specific requirements for the solar
cell performance to be enhanced by this process. We focus on the
pentacene$-$C$_{60}$ solar cell, and on the basis of our calculations and
available experimental data, we conclude that there is not enough evidence that
these requirements are met by the donor$-$acceptor interface here. We propose
experiments that can determine whether the minimal requirement for enhanced
performance driven by singlet fission is met in this and other solar cells.

34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
3
The categories of this paper are: physics
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin