Efficient
Planar Heterojunction Perovskite Solar Cells
Based on Formamidinium Lead Bromide
Posted on 2015-12-17 - 03:56
The
development of medium-bandgap solar cell absorber materials
is of interest for the design of devices such as tandem solar cells
and building-integrated photovoltaics. The recently developed perovskite
solar cells can be suitable candidates for these applications. At
present, wide bandgap alkylammonium lead bromide perovskite absorbers
require a high-temperature sintered mesoporous TiO2 photoanode
in order to function efficiently, which makes them unsuitable for
some of the above applications. Here, we present for the first time
highly efficient wide bandgap planar heterojunction solar cells based
on the structurally related formamidinium lead bromide. We show that
this material exhibits much longer diffusion lengths of the photoexcited
species than its methylammonium counterpart. This results in planar
heterojunction solar cells exhibiting power conversion efficiencies
approaching 7%. Hence, formamidinium lead bromide is a strong candidate
as a wide bandgap absorber in perovskite solar cells.
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Hanusch, Fabian
C.; Wiesenmayer, Erwin; Mankel, Eric; Binek, Andreas; Angloher, Philipp; Fraunhofer, Christina; et al. (2015). Efficient
Planar Heterojunction Perovskite Solar Cells
Based on Formamidinium Lead Bromide. ACS Publications. Collection. https://doi.org/10.1021/jz501237m
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AUTHORS (12)
FH
Fabian
C. Hanusch
EW
Erwin Wiesenmayer
EM
Eric Mankel
AB
Andreas Binek
PA
Philipp Angloher
CF
Christina Fraunhofer
NG
Nadja Giesbrecht
JF
Johann M. Feckl
WJ
Wolfram Jaegermann
DJ
Dirk Johrendt
TB
Thomas Bein
PD
Pablo Docampo
KEYWORDS
cell absorber materialsEfficient Planar Heterojunction Perovskite Solar Cellsphotoexcited speciesmethylammonium counterpartmaterial exhibitsBromideThe developmentbromide perovskite absorberssintered mesoporous TiO 2 photoanodediffusion lengthsbandgap absorberbandgap alkylammoniumpower conversion efficiencies