Results 11 to 20 of about 71,129 (328)

Localization-limited exciton oscillator strength in colloidal CdSe nanoplatelets revealed by the optically induced stark effect

Light: Science & Applications, 2021
2D materials are considered for applications that require strong light-matter interaction because of the apparently giant oscillator strength of the exciton transitions in the absorbance spectrum. Nevertheless, the effective oscillator strengths of these
Pieter Geiregat, Carmelita Rodá, Ivo Tanghe, Shalini Singh, Alessio Di Giacomo, Delphine Lebrun, Gianluca Grimaldi, Jorick Maes, Dries Van Thourhout, Iwan Moreels, Arjan J. Houtepen, Zeger Hens   +11 more
doaj   +1 more source

Optical Absorption on Electron Quantum-Confined States of Perovskite Quantum Dots

Nanomaterials, 2022
In the framework of the dipole approximation, it is shown that in the perovskites quantum dots (QDs) FAPbBr3  and {en} FAPbBr3  interacting with low-intensity light, the oscillator strengths of transitions, as well as the dipole moments allowing ...
Serhii I. Pokutnii, Andrzej Radosz
doaj   +1 more source

Exponentially Correlated Hylleraas–Configuration Interaction Studies of Atomic Systems. III. Upper and Lower Bounds to He-Sequence Oscillator Strengths for the Resonance ¹S→¹P Transition

Atoms, 2023
The exponentially correlated Hylleraas–configuration interaction method (E-Hy-CI) is a generalization of the Hylleraas–configuration interaction method (Hy-CI) in which the single rij of an Hy-CI wave function is generalized to a form of the generic type
James S. Sims, Bholanath Padhy, María Belén Ruiz Ruiz   +2 more
doaj   +1 more source

Biexciton oscillator strength [PDF]

Physical Review B, 2009
Our goal is to provide a physical understanding of the elementary coupling between photon and biexciton and to derive the physical characteristics of the biexciton oscillator strength, following the procedure we used for trion. Instead of the more standard two-photon absorption, this work concentrates on molecular biexciton created by photon absorption
Combescot, Monique, Betbeder-Matibet, Odile   +1 more
openaire   +2 more sources

Experimental MoIIoscillator strengths [PDF]

Journal of Physics B: Atomic, Molecular and Optical Physics, 2001
Experimental branching fractions (BFs) of Mo (II,) ranging in wavelength from 1970 to 4370 Angstrom, have been measured from intensity calibrated spectra recorded with the Lund UV Fourier transform spectrometer (FTS). Radiative lifetimes for 10 levels have been measured using the method of laser-induced fluorescence (LIF).
Sikstrom, C. M, Pihlemark, H, Nilsson, H, Litzen, U, Johansson, S, Li, Z. S, Lundberg, Hans   +6 more
openaire   +3 more sources

Towards the Provision of Accurate Atomic Data for Neutral Iron

Galaxies, 2018
The rich emission and absorption line spectra of Fe I may be used to extract crucial information on astrophysical plasmas, such as stellar metallicities.
Andrew Conroy, Catherine Ramsbottom, Connor Ballance, Francis Keenan   +3 more
doaj   +1 more source

Where Is the Electronic Oscillator Strength? Mapping Oscillator Strength across Molecular Absorption Spectra [PDF]

The Journal of Physical Chemistry A, 2016
The effectiveness of solar energy capture and conversion materials derives from their ability to absorb light and to transform the excitation energy into energy stored in free carriers or chemical bonds. The Thomas-Reiche-Kuhn (TRK) sum rule mandates that the integrated (electronic) oscillator strength of an absorber equals the total number of ...
Zheng L., Polizzi N. F., Dave A. R., Migliore A., Beratan D. N.   +4 more
openaire   +2 more sources

Computational Comparison of CPDT to other Conjugated Linkers in Triarylamine-based Organic Dyes

CHIMIA, 2013
The use of the cyclopentadithiophene (cpdt) fragment to chemically link electron donor and acceptor groups has become a rather common procedure to design new organic dyes with enhanced light harvesting properties.
Clàudia Climent, David Casanova
doaj   +1 more source

Current Status and Developments of the Atomic Database on Rare-Earths at Mons University (DREAM)

Atoms, 2020
The main purpose of the Database on Rare Earths At Mons University (DREAM) is to provide the scientific community with updated spectroscopic parameters related to lanthanide atoms (Z = 57–71) in their lowest ionization stages.
Pascal Quinet, Patrick Palmeri
doaj   +1 more source

Pseudo-Relativistic Hartree–Fock and Fully Relativistic Dirac–Hartree–Fock Calculations of Radiative Parameters in the Fifth Spectrum of Lutetium (Lu V)

Atoms, 2022
Using two independent theoretical methods based on the pseudo-relativistic Hartree–Fock (HFR) and the fully relativistic Multiconfigurational Dirac–Hartree–Fock (MCDHF) approaches, we computed the radiative parameters (transition probabilities and ...
Lucas Maison, Helena Carvajal Gallego, Pascal Quinet   +2 more
doaj   +1 more source