Does Singlet Fission Enhance the Performance of Organic Solar Cells?

作者：Aryanpour K^*; Munoz J A; Mazumdar S

来源：Journal of Physical Chemistry C, 2013, 117(10): 4971-4979.

DOI：10.1021/jp312302x

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.

• 出版日期2013-3-14