Crystallization control via ligand–perovskite coordination for high-performance flexible perovskite solar cells
Energy & Environmental Science,
Год журнала:
2024,
Номер
17(17), С. 6256 - 6267
Опубликована: Янв. 1, 2024
Crystallization
kinetics
modulation
of
high-performance
flexible
perovskite
photovoltaics
achieving
autonomous
energy
generation
under
outdoor
settings.
Язык: Английский
Facet-orientation-enhanced thermal transfer for temperature-insensitive and stable p-i-n perovskite solar cells
eScience,
Год журнала:
2025,
Номер
unknown, С. 100372 - 100372
Опубликована: Янв. 1, 2025
Язык: Английский
Exploring Nanoscale Perovskite Materials for Next-Generation Photodetectors: A Comprehensive Review and Future Directions
Nano-Micro Letters,
Год журнала:
2024,
Номер
17(1)
Опубликована: Сен. 30, 2024
Abstract
The
rapid
advancement
of
nanotechnology
has
sparked
much
interest
in
applying
nanoscale
perovskite
materials
for
photodetection
applications.
These
are
promising
candidates
next-generation
photodetectors
(PDs)
due
to
their
unique
optoelectronic
properties
and
flexible
synthesis
routes.
This
review
explores
the
approaches
used
development
use
devices
made
different
architectures,
including
quantum
dots,
nanosheets,
nanorods,
nanowires,
nanocrystals.
Through
a
thorough
analysis
recent
literature,
also
addresses
common
issues
like
mechanisms
underlying
degradation
PDs
offers
perspectives
on
potential
solutions
improve
stability
scalability
that
impede
widespread
implementation.
In
addition,
it
highlights
encompasses
detection
light
fields
dimensions
other
than
intensity
suggests
avenues
future
research
overcome
these
obstacles
fully
realize
state-of-the-art
systems.
provides
comprehensive
overview
guides
efforts
towards
improved
performance
wider
applicability,
making
valuable
resource
researchers.
Язык: Английский
Revealing the Critical Role of Electron‐Withdrawing Cores in Bulk Passivation of Diammonium Ligands Toward High‐Performance Perovskite Solar Cells
Advanced Functional Materials,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
Abstract
Diammonium
derivatives
with
electron‐withdrawing
cores
of
cyclohexyl
or
phenyl
have
demonstrated
enormous
potential
in
achieving
high‐performance
perovskite
solar
cells.
Nevertheless,
the
critical
role
these
diammonium
passivation
on
device
performance
is
yet
to
be
elucidated.
Herein,
two
kinds
ligands
1,
4‐cyclohexyldimethylammonium
diiodide
(CyDMADI)
and
4‐phenyldimethylammonium
(PhDMADI)
are
introduced
into
precursor
for
bulk
passivation.
The
PhDMADI
system
exhibits
a
stronger
unit
comparison
CyDMADI
core,
thus
resulting
enhanced
electrostatic
interaction
between
uncoordinated
Pb
2+
groups
hydrogen
bonds
I─Pb
skeleton.
Such
strengthened
interactions
effectively
inhibit
generation
trap
states
therefore
significantly
decrease
non‐radiative
recombination.
PhDMADI‐passivated
film
demonstrates
mitigated
microstrain
decreased
grain
boundary
grooves
（GBGs）
compared
CyDMADI‐based
counterpart.
Simultaneously,
treatment
can
efficiently
slow
down
hot‐carriers
cooling
dynamics
process,
benefiting
transfer
hot‐carriers.
Consequently,
achieves
an
impressive
efficiency
26.04%,
along
excellent
operating
stability
which
retains
90%
its
initial
after
1100
h
tracking
at
maximum
power
point
under
continuous
one
sun
illumination.
Язык: Английский
Ordered crystal growth of 2D Ruddlesden–Popper perovskites via synergistic fluorination and chlorination for efficient and stable 2D/3D heterostructure perovskite solar cells
Shitong Du,
Wenbin Yang,
Wending Hao
и другие.
Chemical Engineering Journal,
Год журнала:
2025,
Номер
unknown, С. 162545 - 162545
Опубликована: Апрель 1, 2025
Язык: Английский
Spiro-Linked Planar Core Small Molecule Hole Transport Materials Enabling High-Performance Inverted Perovskite Solar Cells
Journal of the American Chemical Society,
Год журнала:
2025,
Номер
unknown
Опубликована: Май 13, 2025
Small-molecule
organic
semiconductors
have
demonstrated
significant
potential
for
application
in
hole-transporting
materials
(HTMs)
perovskite
solar
cells
(PSCs),
thanks
to
their
high
reproducibility
and
convenient
synthesis
routes.
Finely
designed
planar
π-π
stacking
structures
emerged
as
one
of
the
primary
strategies
achieving
high-performance
small-molecule
HTMs.
In
particular,
incorporation
a
helical
structure
into
HTM
designs
through
linearization
approach
has
proven
effective,
leading
development
novel
with
superior
properties.
this
study,
structure-property
relationship
these
small
molecules
been
systematically
explored.
The
newly
developed
HTM,
SPCF-MeTPA,
based
on
spiro[cyclopentane-1,9'-fluorene]
core,
features
rigid
conjugated
system
spiro-linked
core.
This
design
provides
improved
intermolecular
charge
extraction
transport,
optimized
energy
levels,
effective
surface
passivation
compared
SPTP-MeTPA,
which
nonplanar
spatial
arrangement.
As
result,
champion
device
SPCF-MeTPA
achieves
efficiencies
26.35%
(certified
25.75%)
24.55%
aperture
areas
0.07
1.01
cm2,
respectively.
Additionally,
devices
demonstrate
exceptional
long-term
stability,
further
highlighting
HTM.
Язык: Английский
Molecular Structure Tailoring of Organic Spacers for High-Performance Ruddlesden–Popper Perovskite Solar Cells
Nano-Micro Letters,
Год журнала:
2024,
Номер
17(1)
Опубликована: Окт. 10, 2024
Abstract
Layer-structured
Ruddlesden–Popper
(RP)
perovskites
(RPPs)
with
decent
stability
have
captured
the
imagination
of
photovoltaic
research
community
and
bring
hope
for
boosting
development
perovskite
solar
cell
(PSC)
technology.
However,
two-dimensional
(2D)
or
quasi-2D
RP
PSCs
are
encountered
some
challenges
large
exciton
binding
energy,
blocked
charge
transport
poor
film
quality,
which
restrict
their
performance.
Fortunately,
these
issues
can
be
readily
resolved
by
rationally
designing
spacer
cations
RPPs.
This
review
mainly
focuses
on
how
to
design
molecular
structures
organic
spacers
aims
endow
RPPs
outstanding
applications.
We
firstly
elucidated
important
roles
in
impacting
crystallization
kinetics,
transporting
ability
Then
we
brought
three
aspects
attention
spacers.
Finally,
presented
specific
structure
strategies
aiming
improve
performance
PSCs.
These
proposed
this
will
provide
new
avenues
develop
novel
advance
RPP
technology
future
Язык: Английский
Heterogeneous Amine with Polycyclic‐Aromatics‐Modified Hole Transport Material for Efficient and Operationally Durable Perovskite Solar Cells
Advanced Functional Materials,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 10, 2024
Abstract
Achieving
efficient
perovskite
solar
cells
(PSCs)
with
high
operational
durability
is
a
challenging
task.
Here,
by
exploiting
the
heterogeneous
amine
strategy
at
molecular
level,
novel
spirobifluorene
derivative
bearing
methoxynaphthalene
and
9,9‐dimethylfluorene
peripheral
groups
(
N
2
,
2′
7
7′
‐tetrakis(9,9‐dimethyl‐9
H
‐fluoren‐2‐yl)‐
‐tetrakis(6‐methoxynaphthalen‐2‐yl)‐9,9′‐spirobi[fluorene]‐2,2′,7,7′‐tetraamine,
denoted
as
Spiro‐NADF)
hole
transport
material
(HTM)
developed
to
address
efficiency
issues
of
PSCs.
Compared
2,2′,7,7′‐tetrakis(
‐di‐
p
‐methoxyphenyl)‐amine‐9,9′‐spirobifluorene,
Spiro‐NADF
exhibits
not
only
favorable
energy
level
alignment
but
also
higher
glass
transition
temperature
strong
adhesion
perovskite.
Moreover,
Spiro‐NADF‐based
layer
shows
excellent
morphological
stability
in
devices
against
damp
heat
stress.
These
advantages
reduce
voltage
loss
suppress
decomposition
ion
migration.
Consequently,
PSCs
based
on
exhibit
champion
24.66%
an
open‐circuit
1.19
V.
The
corresponding
show
greatly
enhanced
harsh
environments,
retaining
over
92%
initial
efficiencies
for
500
h
aging
under
test
(85
°C
70–90%
relative
humidity)
illumination
maximum
power
point
tracking,
respectively.
This
work
demonstrates
that
engineering
HTMs
using
amines
polycyclic
aromatics
leaves
considerable
room
developing
stable
Язык: Английский
Entropy‐Dominated Triplet Exciton Emission in Carbon Dots
Small,
Год журнала:
2024,
Номер
20(45)
Опубликована: Июль 19, 2024
Abstract
Phosphorescence
in
carbon
dots
(CDs)
from
triplet
exciton
radiative
recombination
at
room
temperature
has
achieved
significant
advancement.
Confinement
and
nanoconfinement,
serving
as
valuable
techniques,
are
commonly
utilized
to
brighten
CDs,
thereby
enhancing
their
phosphorescence.
However,
a
comprehensive
universally
applicable
physical
description
of
confinement‐enhanced
phosphorescence
is
still
lacking,
despite
efforts
understand
its
underlying
nature.
In
this
study,
the
dominance
entropy
revealed
emission
CDs
through
establishment
microscopic
vibration
state
model.
with
varying
levels
studied,
indicating
that
low
system,
multi‐energy
exhibits
enhanced
brightness,
accompanied
by
corresponding
increase
lifetimes.
The
product
lifetime
intensity
serves
descriptor
for
properties.
Moreover,
an
entropy‐dependent
information
variation
system
based
on
demonstrated.
Specifically,
low‐entropy
retained,
whereas
erased
high‐entropy
system.
This
work
elucidates
nature
emission,
offering
deeper
understanding
achieving
ultralong
future.
Язык: Английский
Impact of Channel Thickness and Doping Concentration for Normally-Off Operation in Sn-Doped β-Ga2O3 Phototransistors
Sensors,
Год журнала:
2024,
Номер
24(17), С. 5822 - 5822
Опубликована: Сен. 7, 2024
We
demonstrate
a
Sn-doped
monoclinic
gallium
oxide
(β-Ga2O3)-based
deep
ultraviolet
(DUV)
phototransistor
with
high
area
coverage
and
manufacturing
efficiency.
The
threshold
voltage
(VT)
switches
between
negative
positive
depending
on
the
β-Ga2O3
channel
thickness
doping
concentration.
Channel
depletion
Ga
diffusion
during
significantly
influence
device
characteristics,
as
validated
through
computer-aided
design
(TCAD)
simulations,
which
agree
experimental
results.
achieved
enhancement-mode
(e-mode)
operation
in
<10
nm-thick
channels,
enabling
zero
VG
to
achieve
low
dark
current
(1.84
pA)
fully
depleted
equilibrium.
Quantum
confinement
thin
layers
enhances
UV
detection
(down
210
nm)
by
widening
band
gap.
Compared
bulk
materials,
dimensionally
constrained
optical
absorption
reduces
electron–phonon
interactions
phonon
scattering,
leading
faster
responses.
Decreasing
VT
VG,
enhancing
power
efficiency,
current,
photo-to-dark
ratio
under
illuminated
conditions.
These
results
can
guide
fabrication
of
tailored
Ga2O3-based
DUV
phototransistors.
Язык: Английский