Nature Communications,
Год журнала:
2019,
Номер
10(1)
Опубликована: Авг. 26, 2019
Charge
carrier
transport
in
organic
semiconductors
is
at
the
heart
of
many
revolutionary
technologies
ranging
from
transistors,
light-emitting
diodes,
flexible
displays
and
photovoltaic
cells.
Yet,
nature
charge
carriers
their
mechanism
these
materials
still
unclear.
Here
we
show
that
by
solving
time-dependent
electronic
Schrödinger
equation
coupled
to
nuclear
motion
for
eight
molecular
crystals,
excess
forms
a
polaron
delocalized
over
up
10-20
molecules
most
conductive
crystals.
The
propagates
through
crystal
diffusive
jumps
several
lattice
spacings
time
during
which
it
expands
more
than
twice
its
size.
Computed
values
size
mobility
are
excellent
agreement
with
experimental
estimates
correlate
very
well
recently
proposed
transient
localization
theory.
Journal of Physics Condensed Matter,
Год журнала:
2015,
Номер
27(7), С. 073201 - 073201
Опубликована: Янв. 30, 2015
Often
quantum
systems
are
not
isolated
and
interactions
with
their
environments
must
be
taken
into
account.
In
such
open
these
environmental
can
lead
to
decoherence
dissipation,
which
have
a
marked
influence
on
the
properties
of
system.
many
instances
environment
is
well-approximated
by
classical
mechanics,
so
that
one
led
consider
dynamics
quantum-classical
systems.
Since
full
dynamical
description
large
many-body
currently
feasible,
mixed
methods
provide
accurate
computationally
tractable
ways
follow
both
system
its
environment.
This
review
focuses
Liouville
dynamics,
several
descriptions,
discusses
problems
arise
when
attempts
combine
coherence
in
systems,
nonadiabatic
surface-hopping
mean-field
theories
relation
as
well
for
simulating
dynamics.
The Journal of Physical Chemistry Letters,
Год журнала:
2020,
Номер
11(13), С. 5120 - 5131
Опубликована: Июнь 9, 2020
In
this
Perspective,
we
review
recent
advances
in
constructing
high-fidelity
potential
energy
surfaces
(PESs)
from
discrete
ab
initio
points,
using
machine
learning
tools.
Such
PESs,
albeit
with
substantial
initial
investments,
provide
significantly
higher
efficiency
than
direct
dynamics
methods
and/or
high
accuracy
at
a
level
that
is
not
affordable
by
on-the-fly
approaches.
These
PESs
only
are
necessity
for
quantum
dynamical
studies
because
of
delocalization
wave
packets
but
also
enable
the
study
low-probability
and
long-time
events
(quasi-)classical
treatments.
Our
focus
here
on
inelastic
reactive
scattering
processes,
which
more
challenging
bound
systems
involvement
continua.
Relevant
applications
developments
processes
both
gas
phase
gas-surface
interfaces
discussed.
Nature Communications,
Год журнала:
2019,
Номер
10(1)
Опубликована: Авг. 26, 2019
Charge
carrier
transport
in
organic
semiconductors
is
at
the
heart
of
many
revolutionary
technologies
ranging
from
transistors,
light-emitting
diodes,
flexible
displays
and
photovoltaic
cells.
Yet,
nature
charge
carriers
their
mechanism
these
materials
still
unclear.
Here
we
show
that
by
solving
time-dependent
electronic
Schrödinger
equation
coupled
to
nuclear
motion
for
eight
molecular
crystals,
excess
forms
a
polaron
delocalized
over
up
10-20
molecules
most
conductive
crystals.
The
propagates
through
crystal
diffusive
jumps
several
lattice
spacings
time
during
which
it
expands
more
than
twice
its
size.
Computed
values
size
mobility
are
excellent
agreement
with
experimental
estimates
correlate
very
well
recently
proposed
transient
localization
theory.