Advanced Energy and Sustainability Research,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 5, 2024
Hole‐transport
materials
(HTMs)
with
suitable
band
alignment
and
simplified
fabrication
processes
are
essential
to
enhance
the
performance
of
perovskite
solar
cells
(PSCs)
n–i–p
structures.
Although
2,2′,7,7′‐tetrakis[
N
,
‐di(4‐methoxyphenyl)amino]‐9,9′‐spirobifluorene
(Spiro‐OMeTAD)
has
been
a
common
HTM
in
PSCs,
its
complex
synthesis
process
high
cost
hinder
commercialization.
Herein,
donor–acceptor–donor
(D–A–D)‐type
novel
small‐molecule
HTM,
6‐phenyl‐1,3,5‐triazine‐2,4‐bis[di(4‐methoxyphenyl)amino]carbazole
(PTBC),
synthesized
using
low‐cost
highly
one‐step
process,
is
reported.
PTBC
passivates
(PVK)
surface
defects
forms
an
appropriate
energy
PVK
light
absorption
layer,
enhancing
hole
extraction
capability.
The
hydrophobic
nature
additionally
prevents
degradation
layer
caused
by
conventional
dopants.
best
PTBC‐based
PSC
yields
power
conversion
efficiency
(PCE)
up
20.17%,
retaining
90.96%
initial
stored
after
2568
h.
This
PTBC,
expected
pave
way
for
commercialization
cost‐effective
long‐term
stable
PSCs
as
alternative
solution
overcome
limitations
associated
Spiro‐OMeTAD.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(2), P. 2408 - 2416
Published: Jan. 3, 2024
Despite
the
fact
that
perovskite
solar
cells
(PSCs)
are
widely
popular
due
to
their
superb
power
conversion
efficiency
(PCE),
further
applications
still
restricted
by
low
stability
and
high-density
defects.
Especially,
weak
binding
ion–electron
properties
of
crystals
make
them
susceptible
moisture
attack
under
environmental
stress.
Herein,
we
report
an
overall
sulfidation
strategy
via
introduction
1-pentanethiol
(PT)
into
film
inhibit
bulk
defects
stabilize
Pb
ions.
It
has
been
confirmed
thiol
groups
in
PT
can
uncoordinated
ions
passivate
iodine
vacancy
forming
strong
Pb–S
bonds,
thus
reducing
nonradiative
recombination.
Moreover,
favorable
passivation
process
also
optimizes
energy-level
arrangement,
induces
better
crystallization,
enhances
charge
extraction
full
cells.
Consequently,
PT-modified
inverted
device
delivers
a
champion
PCE
22.46%,
which
is
superior
control
(20.21%).
More
importantly,
retains
91.5%
its
initial
after
storage
air
for
1600
h
over
85%
heating
at
85
°C
800
h.
This
work
provides
new
perspective
simultaneously
improve
performance
PSCs
satisfy
commercial
applications.
Advanced Functional Materials,
Journal Year:
2024,
Volume and Issue:
34(37)
Published: April 10, 2024
Abstract
As
an
electron
transport
layer
(ETL)
widely
used
in
organic
solar
cells
(OSCs),
ZnO
has
problems
with
energy
level
mismatch
the
active
and
excessive
defects
on
surface,
which
can
reduce
efficiency
of
OSCs.
Here,
ZnO/ZrSe
2
composite
is
fabricated
by
modifying
2D
ZrSe
.
The
XPS
first‐principles
calculation
(FPC)
show
that
obtains
electrons
from
forms
interfacial
dipoles
toward
layer,
decreases
work
function
ZnO,
thus
reducing
interface
barrier
favoring
collection
At
same
time,
after
modification,
oxygen
vacancy
density
surface
decreases,
improving
conductivity
ZnO.
More
importantly,
femtosecond
transient
absorption
(Fs‐TA)
shows
selectively
traps
holes
prevents
entering
thereby
probability
recombination.
Finally,
as
a
novel
ETL
OSCs
PBDB‐T:
ITIC,
PM6:Y6
PM6:
L8‐BO
layers,
obtaining
12.09%,
16.34%,
18.24%
efficiency,
respectively.
This
study
provides
method
for
modification
further
investigates
role
nanosheets
modification.
Journal of Materials Chemistry A,
Journal Year:
2024,
Volume and Issue:
12(21), P. 12545 - 12551
Published: Jan. 1, 2024
A
new
passivator,
4-aminophenyl
sulfone
(APS),
containing
a
Lewis
base
group
(SO),
could
interact
with
the
uncoordinated
Pb
2+
on
perovskite
surface,
which
not
only
reduces
trap
state
density
but
also
induces
more
p-type
surface
of
film.
Heliyon,
Journal Year:
2024,
Volume and Issue:
10(10), P. e31138 - e31138
Published: May 1, 2024
In
perovskite
solar
cells
(PSCs),
the
charge
carrier
recombination
obstacles
mainly
occur
at
ETL/perovskite
and
HTL/perovskite
interfaces,
which
play
a
decisive
role
in
cell
performance.
Therefore,
this
study
aims
to
enhance
flexible
PSC
(FPSC)
efficiency
by
adding
newly
designed
CBz-PAI-interlayer
(simply
CBz-PAI-IL)
perovskite/HTL
interface.
addition,
substantial
work
has
been
carried
out
on
five
different
HTLs
(Se/Te-Cu
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(24), P. 31218 - 31227
Published: June 6, 2024
With
the
rapid
improvement
of
power
conversion
efficiency
(PCE),
perovskite
solar
cells
(PSCs)
have
broad
application
prospects
and
their
industrialization
will
be
next
step.
Nevertheless,
performance
long-term
stability
devices
are
limited
by
defect-induced
nonradiative
recombination
centers
ions'
migration
inside
films.
Here,
usnic
acid
(UA),
an
easy-to-obtain
efficient
natural
biomaterial
with
a
hydroxyl
functional
group
(−OH)
four
carbonyl
groups
(−C═O)
was
added
to
MAPbI3
precursor
regulate
crystallization
process
slowing
rate,
thereby
expanding
crystal
size
preparing
films
low
defect
density.
In
addition,
UA
anchors
uncoordinated
Pb2+
suppresses
I-ions,
which
enhances
film.
Consequently,
impressive
PCE
exceeding
20%
achieved
for
inverted
structure
MAPbI3-based
PSCs.
More
impressively,
optimized
PSCs
maintained
78%
initial
under
air
high
humidity
(RH
≈
65%,
25–30
°C)
1000
h.
can
extracted
from
plant,
usnea,
making
it
inexpensive
easy
obtain.
Our
work
demonstrates
plant
material
in
industrialization,
is
significant
nowadays.
Small,
Journal Year:
2024,
Volume and Issue:
unknown
Published: June 11, 2024
Abstract
The
properties
of
an
interface
at
the
hole
transport
layer
(HTL)/perovskite
are
crucial
for
performance
and
stability
perovskite
solar
cells
(PVSCs),
especially
buried
between
HTL
layer.
Here,
a
molecular
named
potassium
1‐trifluoroboratomethylpiperidine
(3FPIP)
assistant‐modified
bottom
strategy
is
proposed
to
improve
charge
transfer
capability
balances
energy
level
perovskite.
BF
3
−
in
3FPIP
molecule
interacts
with
undercoordinated
Pb
2+
passivate
iodine
vacancies
enhance
PVSCs
performance.
Furthermore,
infiltration
K
+
ions
into
molecules
enhances
crystallinity
Therefore,
treatment
exhibit
champion
24.6%.
More
importantly,
corresponding
devices
represent
outstanding
ambient
stability,
remaining
92%
initial
efficiency
after
1200
h.
This
work
provides
new
method
engineering
functional
group
synergy.
Advanced Functional Materials,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Feb. 25, 2025
Abstract
Perovskite
films
have
long
been
plagued
by
defects,
mainly
located
at
grain
boundaries,
leading
to
device
degradation,
especially
the
effects
of
residual
PbI
2
.
As
effective
boundary
passivators,
organic
ammonium
salts
are
thus
extensively
investigated.
Here,
study
introduces
a
nitrogen
heterocyclic
molecule,
1,3‐diphenyl‐benzimidazole
iodide
(DBI),
for
post‐treatment
perovskite
film
construct
robust
one‐dimensional
(1D)/three‐dimensional
(3D)
structure.
The
1D
structure
DBPbI
3
formed
from
interaction
between
and
DBI
enables
repair
local
defects
enhancement
stability.
Concurrently,
double
conjugated
benzene
imidazole
rings
synergistically
facilitate
charge
transfer
promote
optimization
energy
levels,
thereby
boosting
extraction.
corresponding
1D/3D
solar
cells
(PSCs)
yielded
high
efficiency
25.04%
with
excellent
photo/thermal
stabilities.
module
exhibited
an
21.04%
total
area
36
cm
long‐term
Small,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 2, 2025
Abstract
Surface
passivation
of
the
perovskite
layer
is
crucial
for
enhancing
photovoltaic
performance
solar
cells
(PSCs).
Vacuum
evaporation
a
scalable
solvent‐free
method
depositing
uniform
and
homogenous
thin
with
better
control
film
thickness.
While
use
vacuum‐deposition
to
obtain
high‐quality
films
recently
adapted,
organic
additives
surface
has
not
been
widely
studied.
In
this
work,
vacuum
introduced
uniformly
deposit
novel
multifunctional
salt,
2‐chlorophenethylamine
pentafluorobenzene
sulfonate
(2‐ClPEAPf),
onto
surface.
It
observed
that
2‐ClPEAPf
only
effectively
passivates
interfacial
defects
but
also
prevents
moisture
invasion
into
film.
As
result,
planar
n–i–p
PSCs
exhibit
maximum
PCE
up
25.16%
an
aperture
area
0.1
cm
2
24.00%
(certified)
on
active
1.0
.
addition,
device
vacuum‐evaporated
reveals
enhanced
operational
stability
maintaining
92.5%
its
initial
efficiency
after
800
hours
continuous
light
irradiation.
