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Quantifying Bimolecular Recombination Losses in Organic Bulk Heterojunction Solar Cells
Author(s) -
Koster L. Jan Anton,
Kemerink Martijn,
Wienk Martijn M.,
Maturová Klará,
Janssen René A. J.
Publication year - 2011
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201004311
Subject(s) - photocurrent , organic solar cell , materials science , recombination , polymer solar cell , charge carrier , solar cell , fullerene , annealing (glass) , optoelectronics , heterojunction , hybrid solar cell , chemical physics , chemistry , polymer , organic chemistry , composite material , biochemistry , gene
We present a new experimental technique that affords direct quantification of the fraction of charge carriers lost in poly(3‐hexylthiophene):fullerene solar cells by bimolecular recombination. Depending on annealing conditions up to 17% of carriers recombine bimolecularly under solar illumination. We explain our findings with a closed analytical expression for the photocurrent generated by an organic solar cell.