1301.6503 (G. Kozyreff et al.)

Microcavity effects on the generation,fluorescence, and diffusion of
excitons in organic solar cells    [PDF]

G. Kozyreff, D. C. Urbanek, L. T. Vuong, O. Nieto Silleras, J. Martorell

We compute the short-circuit diffusion current of excitons in an organic solar cell, with special emphasis on fluorescence losses. The exciton diffusion length is not uniform but varies with its position within the device, even with moderate fluorescence quantum efficiency. With large quantum efficiencies, the rate of fluorescence can be strongly reduced with proper choices of the geometrical and dielectric parameters. In this way, the diffusion length can be increased and the device performance significantly improved.

View original: http://arxiv.org/abs/1301.6503