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@ARTICLE{Sun:187199,
author = {Sun, Shuangyong and Salim, Teddy and Mathews, Nripan and
Duchamp, Martial and Boothroyd, Christopher Brian and Xing,
Guichuan and Sum, Tze Chien and Lam, Yeng Ming},
title = {{T}he origin of high efficiency in low-temperature
solution-processable bilayer organometal halide hybrid solar
cells},
journal = {Energy $\&$ environmental science},
volume = {7},
number = {1},
issn = {1754-5692},
address = {Cambridge},
publisher = {RSC Publ.},
reportid = {FZJ-2015-00873},
pages = {399-407},
year = {2014},
abstract = {This work reports a study into the origin of the high
efficiency in solution-processable bilayer solar cells based
on methylammonium lead iodide (CH3NH3PbI3) and
[6,6]-phenyl-C61-butyric acid methyl ester (PC61BM). Our
cell has a power conversion efficiency (PCE) of $5.2\%$
under simulated AM 1.5G irradiation (100 mW cm−2) and an
internal quantum efficiency of close to $100\%,$ which means
that nearly all the absorbed photons are converted to
electrons and are efficiently collected at the electrodes.
This implies that the exciton diffusion, charge transfer and
charge collection are highly efficient. The high exciton
diffusion efficiency is enabled by the long diffusion length
of CH3NH3PbI3 relative to its thickness. Furthermore, the
low exciton binding energy of CH3NH3PbI3 implies that
exciton splitting at the CH3NH3PbI3/PC61BM interface is very
efficient. With further increase in CH3NH3PbI3 thickness, a
higher PCE of $7.4\%$ could be obtained. This is the highest
efficiency attained for low temperature solution-processable
bilayer solar cells to date.},
cin = {PGI-5},
ddc = {690},
cid = {I:(DE-Juel1)PGI-5-20110106},
pnm = {42G - Peter Grünberg-Centre (PG-C) (POF2-42G41)},
pid = {G:(DE-HGF)POF2-42G41},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000329550700030},
doi = {10.1039/c3ee43161d},
url = {https://juser.fz-juelich.de/record/187199},
}