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@ARTICLE{Krckemeier:845175,
author = {Krückemeier, Lisa and Kaienburg, Pascal and Flohre, Jan
and Bittkau, Karsten and Zonno, Irene and Krogmeier,
Benedikt and Kirchartz, Thomas},
title = {{D}eveloping design criteria for organic solar cells using
well-absorbing non-fullerene acceptors},
journal = {Communications Physics},
volume = {1},
number = {1},
issn = {2399-3650},
address = {London},
publisher = {Springer Nature},
reportid = {FZJ-2018-02479},
pages = {27},
year = {2018},
abstract = {In recent years, efficiencies of bulk heterojunction solar
cells have risen substantially mostly due to the development
of well-absorbing small molecules that replace fullerenes as
the acceptor molecule. The improved light absorption due to
the combination of two strongly absorbing molecules raises
the question, how to best combine the absorption onsets of
the donor and acceptor molecule to maximize efficiency. By
using numerical simulations, we explain under which
circumstances complementary absorption or overlapping
absorption bands of the two molecules will be more
beneficial for efficiency. Only when mobility and lifetime
of charge carriers are sufficiently high to allow sufficient
charge collection for layer thicknesses around the second
interference maximum, a combination of complementary
absorbing molecules is more efficient. For smaller
thicknesses, a blend of molecules with the same absorption
onset achieves higher efficiencies.},
cin = {IEK-5},
ddc = {530},
cid = {I:(DE-Juel1)IEK-5-20101013},
pnm = {121 - Solar cells of the next generation (POF3-121)},
pid = {G:(DE-HGF)POF3-121},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000437243000001},
doi = {10.1038/s42005-018-0026-3},
url = {https://juser.fz-juelich.de/record/845175},
}