Angewandte Chemie,
Год журнала:
2024,
Номер
136(14)
Опубликована: Фев. 10, 2024
Abstract
The
main
obstacles
to
promoting
the
commercialization
of
perovskite
solar
cells
(PSCs)
include
their
record
power
conversion
efficiency
(PCE),
which
still
remains
below
Shockley–Queisser
limit,
and
poor
long‐term
stability,
attributable
crystallographic
defects
in
films
open‐circuit
voltage
(
V
oc
)
loss
devices.
In
this
study,
potassium
(4‐tert‐butoxycarbonylpiperazin‐1‐yl)
methyl
trifluoroborate
(PTFBK)
was
employed
as
a
multifunctional
additive
target
modulate
bulk
carrier
dynamics
PSCs.
Apart
from
simultaneously
passivating
anionic
cationic
defects,
PTFBK
could
also
optimize
energy‐level
alignment
devices
weaken
interaction
between
carriers
longitudinal
optical
phonons,
resulting
lifetime
greater
than
3
μs.
Furthermore,
it
inhibited
non‐radiative
recombination
improved
crystallization
capacity
film.
Hence,
rigid
flexible
p‐i‐n
PSCs
yielded
champion
PCEs
24.99
%
23.48
%,
respectively.
More
importantly,
due
hydrogen
bonding
formamidinium
fluorine,
exhibited
remarkable
thermal,
humidity,
operational
tracking
at
maximum
point
stabilities.
reduced
Young's
modulus
residual
stress
layer
provided
excellent
bending
stability
for
Advanced Materials,
Год журнала:
2024,
Номер
36(24)
Опубликована: Март 20, 2024
A
robust
perovskite-buried
interface
is
pivotal
for
achieving
high-performance
flexible
indoor
photovoltaics
as
it
significantly
influences
charge
transport
and
extraction
efficiency.
Herein,
a
molecular
bridge
strategy
introduced
utilizing
sodium
2-cyanoacetate
(SZC)
additive
at
the
to
simultaneously
achieve
in
situ
passivation
of
interfacial
defects
bottom-up
crystallization
modulation,
resulting
photovoltaic
applications.
Supported
by
both
theoretical
calculations
experimental
evidences,
illustrates
how
SZCs
serve
bridges,
establishing
bonds
between
SnO
Advanced Materials,
Год журнала:
2023,
Номер
35(38)
Опубликована: Июль 1, 2023
Dual-interface
modulation
including
buried
interface
as
well
the
top
surface
has
recently
been
proven
to
be
crucial
for
obtaining
high
photovoltaic
performance
in
lead
halide
perovskite
solar
cells
(PSCs).
Herein,
first
time,
strategy
of
using
functional
covalent
organic
frameworks
(COFs),
namely
HS-COFs
dual-interface
modulation,
is
reported
further
understand
its
intrinsic
mechanisms
optimizing
bottom
and
surfaces.
Specifically,
layer
can
enhance
resistance
against
ultraviolet
radiation,
more
importantly,
release
tensile
strain,
which
beneficial
enhancing
device
stability
improving
order
crystal
growth.
Furthermore,
detailed
characterization
results
reveal
that
on
effectively
passivate
defects
suppress
non-radiation
recombination,
optimize
crystallization
growth
film.
Benefiting
from
synergistic
effects,
modified
devices
deliver
champion
efficiencies
24.26%
21.30%
0.0725
cm2
1
-sized
devices,
respectively.
Moreover,
they
retain
88%
84%
their
initial
after
aging
2000
h
under
ambient
conditions
(25
°C,
relative
humidity:
35-45%)
a
nitrogen
atmosphere
with
heating
at
65
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(30)
Опубликована: Июнь 22, 2023
Abstract
The
design
of
additives
mainly
involves
selection
functional
groups
with
coordination
relationships
defects
in
perovskite
materials.
However,
it
is
particularly
important
to
further
adjust
the
geometrical
configuration
and
electronic
structure
an
additive.
Here,
nicotinamide
(NA)
its
derivative
6‐Methylnicotinamide
(CNA)
electron‐donor
are
comparatively
analyzed
investigate
effect
molecular
dipole
on
defect
passivation
absorbers
photovoltaic
properties
solar
cells
(PSCs).
Theoretical
calculations
demonstrate
that
CNA
molecule
large
combine
undercoordinated
Pb
2+
ions
form
a
higher
binding
energy,
which
beneficial
improve
formation
energy
Pb‐related
defects.
Experimental
characterization
confirms
significantly
enhances
between
acylamino
defective
cations,
conducive
obtain
high‐quality,
low‐defect
density
state,
grain
size,
smooth
surface
absorbers.
Thanks
cloud
distribution
molecules,
PSCs
yield
impressive
efficiency
as
high
24.33%
excellent
environmental
storage,
heat,
light
stabilities.
This
research
provides
basis
for
designing
steric‐charge‐dependence
assist
photovoltaics.
Angewandte Chemie International Edition,
Год журнала:
2024,
Номер
63(14)
Опубликована: Фев. 10, 2024
Abstract
The
main
obstacles
to
promoting
the
commercialization
of
perovskite
solar
cells
(PSCs)
include
their
record
power
conversion
efficiency
(PCE),
which
still
remains
below
Shockley–Queisser
limit,
and
poor
long‐term
stability,
attributable
crystallographic
defects
in
films
open‐circuit
voltage
(
V
oc
)
loss
devices.
In
this
study,
potassium
(4‐tert‐butoxycarbonylpiperazin‐1‐yl)
methyl
trifluoroborate
(PTFBK)
was
employed
as
a
multifunctional
additive
target
modulate
bulk
carrier
dynamics
PSCs.
Apart
from
simultaneously
passivating
anionic
cationic
defects,
PTFBK
could
also
optimize
energy‐level
alignment
devices
weaken
interaction
between
carriers
longitudinal
optical
phonons,
resulting
lifetime
greater
than
3
μs.
Furthermore,
it
inhibited
non‐radiative
recombination
improved
crystallization
capacity
film.
Hence,
rigid
flexible
p‐i‐n
PSCs
yielded
champion
PCEs
24.99
%
23.48
%,
respectively.
More
importantly,
due
hydrogen
bonding
formamidinium
fluorine,
exhibited
remarkable
thermal,
humidity,
operational
tracking
at
maximum
point
stabilities.
reduced
Young's
modulus
residual
stress
layer
provided
excellent
bending
stability
for
Advanced Materials,
Год журнала:
2024,
Номер
36(16)
Опубликована: Янв. 8, 2024
Wide-bandgap
metal
halide
perovskites
have
demonstrated
promise
in
multijunction
photovoltaic
(PV)
cells.
However,
photoinduced
phase
segregation
and
the
resultant
low
open-circuit
voltage
(V
Advanced Energy Materials,
Год журнала:
2023,
Номер
14(7)
Опубликована: Дек. 21, 2023
Abstract
In
recent
years,
the
surface
modification
of
perovskite
by
wide
band‐gap
insulating
materials
has
been
one
main
strategies
to
achieve
efficient
and
stable
solar
cells
(PSCs).
Unfortunately,
a
significant
hurdle
in
this
approach
is
dilemma
surrounding
quality
passivation
transport
charges.
Here,
trade‐off
overcome
introducing
self‐assembled
diphenylphosphinic
acid
(DPPA)
porous
layer.
Applying
highly
concentrated
DPPA
solution
on
not
only
provides
excellent
entire
surface,
but
also
excess
will
form
layer
(PIL),
which
forms
random
submicron‐sized
openings
at
interface
for
accelerated
charge
transport.
addition,
energy
level
can
be
modulated
material
facilitate
carrier
As
result,
an
impressive
power
conversion
efficiency
(PCE)
over
24%
achieved
methylammonium‐free
p‐i‐n
devices
with
ultrahigh
fill
factor
(FF)
84.7%.
The
unencapsulated
exhibit
thermal
operational
stability.
This
work
paves
way
establishment
effective
facilitated
simultaneously.
Materials Horizons,
Год журнала:
2024,
Номер
11(15), С. 3465 - 3481
Опубликована: Янв. 1, 2024
This
review
primarily
discusses
the
effects
of
green
antisolvent
treatment
on
crystal
growth
and
nucleation
crystallization
mechanism
device
performance
stability
perovskite
solar
cells.
Nano-Micro Letters,
Год журнала:
2025,
Номер
17(1)
Опубликована: Янв. 28, 2025
Abstract
Finding
ways
to
produce
dense
and
smooth
perovskite
films
with
negligible
defects
is
vital
for
achieving
high-efficiency
solar
cells
(PSCs).
Herein,
we
aim
enhance
the
quality
of
through
utilization
a
multifunctional
additive
in
anti-solvent,
strategy
referred
as
anti-solvent
engineering.
Specifically,
introduce
ortho-substituted-4′-(4,4″-di-tert-butyl-1,1′:3′,1″-terphenyl)-graphdiyne
(o-TB-GDY)
an
AAE
additive,
characterized
by
its
sp
/
2
-cohybridized
highly
π
-conjugated
structure,
into
anti-solvent.
o-TB-GDY
not
only
significantly
passivates
undercoordinated
lead
(through
potent
coordination
originating
from
specific
high
–electron
conjugation),
but
also
serves
nucleation
seeds
effectively
growth
crystals.
This
markedly
reduces
non-radiative
recombination,
thereby
increasing
power
conversion
efficiency
(PCE)
25.62%
(certified
25.01%).
Meanwhile,
PSCs
exhibit
largely
enhanced
stability,
maintaining
92.6%
their
initial
PCEs
after
500
h
continuous
1-sun
illumination
at
~
23
°C
nitrogen-filled
glove
box.
Advanced Energy Materials,
Год журнала:
2023,
Номер
13(39)
Опубликована: Сен. 3, 2023
Abstract
Targeted
passivation
of
defects
in
perovskite
is
the
primary
consideration
design
additives
containing
functional
groups.
However,
precise
modulation
electron
structure
groups
and
structure‐activity
relationship
between
electronic
configuration
performance
solar
cells
(PSCs)
still
need
to
be
explored.
In
this
study,
5‐chloro‐2‐hydroxypyridine
derivatives
with
–NH
2
(HNCLP)
–F
(HFCLP)
end
are
selected
realize
push‐pull
configuration.
Density
theory
demonstrates
that,
compared
HFCLP,
HNCLP
electron‐donating
terminal
has
a
long
dipole
moment
immobilize
interstitial
I
3
−
,
N
side
pyridine
high‐density
cloud
enables
strong
undercoordinated
Pb
2+
ions.
The
experimental
results
confirm
that
optimized
emerges
ability,
greatly
suppresses
nonradiative
recombination
absorber,
remarkably
improves
film
crystal
quality
along
extraction
transfer
process
photogenerated
carriers.
HNCLP‐contained
PSC
exhibits
remarkable
efficiency
24.47%,
helps
enhance
moisture‐proof
device
storage
stability.
Abstract
The
achievement
of
both
efficiency
and
stability
in
perovskite
solar
cells
(PSCs)
remains
a
challenging
actively
researched
topic.
In
particular,
among
different
environmental
factors,
ultraviolet
(UV)
photons
play
pivotal
role
contributing
to
device
degradation.
this
work,
by
harvesting
simultaneously
the
optical
structural
properties
bottom–up‐synthesized
colloidal
carbon
quantum
dots
(CQDs),
cost‐effective
means
is
provided
circumvent
UV‐induced
degradation
PSCs
without
scarification
on
their
power
conversion
efficiencies
(PCEs).
By
exploring
optimizing
number
CQDs
locations/interfaces
where
are
applied,
synergetic
configuration
achieved
photovoltaic
performance
drop
due
loss
completely
compensated
increased
crystallinity
interfacial
modification.
As
result,
optimized
configurations
applied
exterior
front
side
as
an
layer
at
interface
between
electron
transport
absorber,
unencapsulated
with
PCEs
>20%
fabricated
which
can
maintain
up
≈94%
initial
PCE
after
100
h
ambient
air
under
continuous
UV
illumination
(5
mW
cm
−2
).
