Results 31 to 40 of about 8,327 (239)

Photoluminescence spectrum of an interacting two-dimensional electron gas at \nu=1 [PDF]

open access: yes, 2005
We report on the theoretical photoluminescence spectrum of the interacting two-dimensional electron gas at filling factor one (\nu=1). We considered a model similar to the one adopted to study the X-ray spectra of metals and solved it analytically using ...
A. O. Caldeira   +5 more
core   +2 more sources

Lanthanide Circularly Polarized Luminescence: Bases and Applications

open access: yesChirality, 2014
AbstractLanthanide (III) luminescence is very characteristic: it is characterized by narrow emission bands, large Stokes shift, and a long excited state lifetime. Moreover, chiral lanthanide complexes can emit strongly circularly polarized light in a way that is almost precluded to purely organic molecules.
ZINNA, FRANCESCO, DI BARI, LORENZO
openaire   +3 more sources

Heterocyclic [9]Helicenes Exhibiting Bright Circularly Polarized Luminescence [PDF]

open access: yesChemistry – A European Journal, 2023
AbstractWe describe a concise synthetic strategy for the preparation of heterocyclic [9]helicenes and a simple preparative‐scale protocol for the optical resolution of the resulting M‐ and P‐enantiomers. The helicenes were characterized by single‐crystal X‐ray diffraction along with a range of spectroscopic and computational techniques.
Stefan S. Warthegau   +12 more
openaire   +3 more sources

Angle-resolved cathodoluminescence imaging polarimetry

open access: yes, 2015
Cathodoluminescence spectroscopy (CL) allows characterizing light emission in bulk and nanostructured materials and is a key tool in fields ranging from materials science to nanophotonics.
Brenny, Benjamin   +4 more
core   +2 more sources

Tetraaza[7]-[15]helicenes Synthesized by Two-Step Strategy: Length-Controlled Chiral π-Systems Exhibiting Amplified Circularly Polarized Luminescence. [PDF]

open access: yesAngew Chem Int Ed Engl
A modular two‐step strategy provides tetraaza[n]helicenes (n = 7–15) as a homologous series with tunable photophysical and chiroptical properties. Extension beyond n = 11 induces pronounced through‐space π–π interactions, narrowing the energy gap and amplifying circularly polarized luminescence.
Otani T   +6 more
europepmc   +3 more sources

Bis(haloBODIPYs) with Labile Helicity: Valuable Simple Organic Molecules That Enable Circularly Polarized Luminescence [PDF]

open access: yes, 2016
Simple organic molecules (SOM) based on bis(haloBODIPY) are shown to enable circularly polarized luminescence (CPL), giving rise to a new structural design for technologically valuable CPL-SOMs.
Abbate   +56 more
core   +1 more source

Tunable Circularly Polarized Luminescence of Excited‐State‐Proton‐Transfer‐Based Chiral Guanidine

open access: yesAdvanced Photonics Research, 2022
Circularly polarized luminescence (CPL) of chiral materials responsive to external stimuli has drawn widespread attention due to their important applications in smart photonic materials.
Dongxue Han   +6 more
doaj   +1 more source

Axially Chiral Biphenyl Compound‐Based Thermally Activated Delayed Fluorescent Materials for High‐Performance Circularly Polarized Organic Light‐Emitting Diodes

open access: yesAdvanced Science, 2020
To boost intrinsic circularly polarized luminescence (CPL) properties of chiral emitters, an axially chiral biphenyl unit is inlaid in thermally activated delayed fluorescent (TADF) skeleton, urging the participation of chiral source in frontier ...
Zhen‐Long Tu   +8 more
doaj   +1 more source

Exciton Spin Dynamics in Semiconductor Quantum Wells

open access: yes, 2007
In this paper we will review Exciton Spin Dynamics in Semiconductor Quantum Wells. The spin properties of excitons in nanostructures are determined by their fine structure.
A. Kavokin   +82 more
core   +1 more source

Optical orientation of the homogeneous non-equilibrium Bose-Einstein condensate of bright excitons (polaritons)

open access: yes, 2012
A simple model, describing the dynamics of the non-equilibrium pseudospin of a homogeneous Bose-Einstein condensate of exciton polaritons, has been formulated.
Korenev, V. L.
core   +1 more source

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