Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(8)
Published: Jan. 9, 2024
Abstract
Numerous
deep/shallow
level
defects
generated
at
the
surface/grain
boundaries
of
perovskite
during
uncontrollable
crystallization
pose
a
formidable
challenge
to
photovoltaic
performance
solar
cells
(PSCs).
Herein,
an
organometallic
cobaltocenium
salt
additive,
1‐propanol‐2‐(1,2,3‐triazol‐4‐yl)
hexafluorophosphate
(PTCoPF
6
),
is
incorporated
into
precursor
solution
regulate
and
minimize
holistic
for
high‐performance
inverted
PSCs.
The
cations
PF
−
in
PTCoPF
stabilize
Pb‐I
framework
repair
shallow‐level
positively
negatively
charged
vacancies
perovskite.
N═N
triazole
ring
can
passivate
deep‐level
uncoordinated
lead.
interaction
between
materials
delays
nucleation
crystal
growth,
ensuring
high‐quality
with
large
grains,
suppressing
non‐radiative
recombination
ion
migration.
Therefore,
‐incorporated
PSC
achieves
impressive
power
conversion
efficiency
25.03%
outstanding
long‐term
stability.
Unencapsulated
encapsulated
PSCs
maintain
93%
95%
their
initial
efficiencies
under
85
°C
storage
nitrogen
atmosphere
1000
h
maximum
point
tracking
nearly
h,
respectively.
Synergistic
kinetic
modulation
defect
passivation
ionized
metal‐organic
complex
additives
will
become
prevalent
methods
improve
stability
Energy Materials and Devices,
Journal Year:
2024,
Volume and Issue:
2(1), P. 9370018 - 9370018
Published: Feb. 2, 2024
Metal
halide
perovskite
solar
cells
(PSCs)
are
one
of
the
most
promising
photovoltaic
devices.
Over
time,
many
strategies
have
been
adopted
to
improve
PSC
efficiency,
and
certified
efficiency
has
reached
26.1%.
However,
only
a
few
research
groups
fabricated
PSCs
with
an
>25%,
indicating
that
achieving
this
remains
uncommon.
To
develop
industry,
outstanding
talent
must
be
reserved
latest
technologies.
Herein,
we
summarize
recent
developments
in
high-efficiency
(>25%)
highlight
their
effective
crystal
regulation,
interface
passivation,
component
layer
structural
design.
Finally,
propose
perspectives
based
on
current
further
enhance
promote
commercialization
process
PSCs.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: Aug. 26, 2024
All-perovskite
tandem
solar
cells
have
shown
great
promise
in
breaking
the
Shockley–Queisser
limit
of
single-junction
cells.
However,
efficiency
improvement
all-perovskite
is
largely
hindered
by
surface
defects
induced
non-radiative
recombination
loss
Sn–Pb
mixed
narrow
bandgap
perovskite
films.
Here,
we
report
a
reconstruction
strategy
utilizing
polishing
agent,
1,4-butanediamine,
together
with
passivator,
ethylenediammonium
diiodide,
to
eliminate
Sn-related
and
passivate
organic
cation
halide
vacancy
on
Our
not
only
delivers
high-quality
films
close-to-ideal
stoichiometric
ratio
but
also
minimizes
energy
at
perovskite/electron
transport
layer
interface.
As
result,
our
bandgaps
1.32
1.25
eV
realize
power
conversion
efficiencies
22.65%
23.32%,
respectively.
Additionally,
further
obtain
certified
28.49%
two-junction
The
impacted
nonradiative
authors
utilize
agent
passivator
deliver
surface.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(13)
Published: Jan. 10, 2024
Abstract
In
the
domain
of
perovskite
photovoltaics,
heterointerfaces
are
subject
to
substantial
trap‐assisted
non‐radiative
recombination,
predominantly
attributed
energy
offset,
interface
defects,
and
roughness
contact.
This
phenomenon
at
heterointerfaces,
where
carrier
recombination
dissipation
occur
due
defects
suboptimal
level
alignment,
can
be
principally
held
accountable
for
V
oc
losses.
Herein,
a
heterointerface
energetics
regulation
(HER)
strategy
is
proposed
by
introducing
potassium
trifluoroacetate
(KTFA)
in
precursor
solution
eliminate
trap
optimize
surface
potential
Fermi
level.
It
first
demonstrated
that
non‐doping
K
+
but
precipitating
upper
buried
will
improve
energy‐level
alignment
charge
extraction
dynamics.
addition,
TFA
−
exhibits
strong
electrostatic
force
with
undercoordinated
Pb
2+
contact
Sn
4+
SnO
2
electron
transporting
layer.
Based
on
vacuum
flash
evaporation
green
treatment
without
anti‐solvent,
Rb
0.02
(Cs
0.05
FA
0.95
)
0.98
PbI
0.91
Br
0.03
Cl
0.06
Cs
3
based
device
achieve
maximum
efficiency
23.36%
24.48%,
respectively.
Further,
modified
devices
exhibit
92%
initial
output
after
1200
h
aging.
HER
addressing
bandgap
poised
advance
both
performance
stability
solar
cells.
Advanced Energy Materials,
Journal Year:
2024,
Volume and Issue:
14(8)
Published: Jan. 9, 2024
Abstract
Numerous
deep/shallow
level
defects
generated
at
the
surface/grain
boundaries
of
perovskite
during
uncontrollable
crystallization
pose
a
formidable
challenge
to
photovoltaic
performance
solar
cells
(PSCs).
Herein,
an
organometallic
cobaltocenium
salt
additive,
1‐propanol‐2‐(1,2,3‐triazol‐4‐yl)
hexafluorophosphate
(PTCoPF
6
),
is
incorporated
into
precursor
solution
regulate
and
minimize
holistic
for
high‐performance
inverted
PSCs.
The
cations
PF
−
in
PTCoPF
stabilize
Pb‐I
framework
repair
shallow‐level
positively
negatively
charged
vacancies
perovskite.
N═N
triazole
ring
can
passivate
deep‐level
uncoordinated
lead.
interaction
between
materials
delays
nucleation
crystal
growth,
ensuring
high‐quality
with
large
grains,
suppressing
non‐radiative
recombination
ion
migration.
Therefore,
‐incorporated
PSC
achieves
impressive
power
conversion
efficiency
25.03%
outstanding
long‐term
stability.
Unencapsulated
encapsulated
PSCs
maintain
93%
95%
their
initial
efficiencies
under
85
°C
storage
nitrogen
atmosphere
1000
h
maximum
point
tracking
nearly
h,
respectively.
Synergistic
kinetic
modulation
defect
passivation
ionized
metal‐organic
complex
additives
will
become
prevalent
methods
improve
stability
