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@ARTICLE{Hpkes:902513,
author = {Hüpkes, Jürgen and Rau, Uwe and Kirchartz, Thomas},
title = {{D}ielectric {J}unction: {E}lectrostatic {D}esign for
{C}harge {C}arrier {C}ollection in {S}olar {C}ells},
journal = {Solar RRL},
volume = {6},
number = {1},
issn = {2367-198X},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2021-04322},
pages = {2100720 -},
year = {2022},
abstract = {Conventional solar cells typically use doping of the
involved semiconducting layers and work function differences
between highly conductive contacts for the electrostatic
design and the charge selectivity of the junction. In some
halide perovskite solar cells, however, substantial
variations in the permittivity of different organic and
inorganic semiconducting layers strongly affect the
electrostatic potential and thereby indirectly also the
carrier concentrations, recombination rates, and eventually
efficiencies of the device. Here, numerical simulations are
used to study the implications of electrostatics on device
performance for classical p−n junctions and p−i−n
junctions, and for device geometries as observed in
perovskite photovoltaics, where high-permittivity absorber
layers are surrounded by low-permittivity and often also
low-conductivity charge transport layers. The key principle
of device design in materials with sufficiently high
mobilities that are still dominated by defect-assisted
recombination is the minimization of volume with similar
densities of electrons and holes. In classical solar cells
this is achieved by doping. For perovskites, the concept of
a dielectric junction is proposed by the selection of charge
transport layers with adapted permittivity if doping is not
sufficient.},
cin = {IEK-5},
ddc = {600},
cid = {I:(DE-Juel1)IEK-5-20101013},
pnm = {1215 - Simulations, Theory, Optics, and Analytics (STOA)
(POF4-121)},
pid = {G:(DE-HGF)POF4-1215},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000719153200001},
doi = {10.1002/solr.202100720},
url = {https://juser.fz-juelich.de/record/902513},
}