Thursday, July 8, 2010

Opportunities for theorists

A nice gentle review is

Molecular Understanding of Organic Solar Cells: The Challenges

by Bredas, Norton, Cornil, and Coropceanu.

It reviews our limited understanding of five key processes in an organic solar cell

(i) optical absorption and exciton formation,
(ii) exciton migration to the donor−acceptor interface,
(iii) exciton dissociation into charge carriers, resulting in the appearance of holes in the donor and electrons in the acceptor,
(iv) charge-carrier mobility, and
(v) charge collection at the electrodes.

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