We present a numerical model for calculating current-voltage characteristics of polymer:fullerene bulk hetrojunction solar cells at different degrees of nanoscale phase separation. We show that the short-circuit current enhancement with finer phase separation is due to a reduction in bimolecular recombination caused by lateral movement of photogenerated electrons to the fullerene-rich phase. At high bias, vertical electron transport is enhanced and lateral movement is reduced, causing a significant field-dependent carrier extraction for coarse morphologies. © 2009 American Chemical Society.
CITATION STYLE
Maturová, K., Van Bavel, S. S., Wienk, M. M., Janssen, R. A. J., & Kemerink, M. (2009). Morphological device model for organic bulk heterojunction solar cells. Nano Letters, 9(8), 3032–3037. https://doi.org/10.1021/nl901511a
Mendeley helps you to discover research relevant for your work.