Role of Spontaneous Orientational Polarization in Organic Donor–Acceptor Blends for Exciton Binding
Sign Up to like & getrecommendations! Published in 2020 at "Advanced Optical Materials"
DOI: 10.1002/adom.202000896
Abstract: Electron–hole pairs at the interface between electron‐donating and electron‐accepting molecules form charge‐transfer excitons (CTEs) via Coulomb attraction. Generally, the attraction energy of the CTE is weaker than that of the Frenkel exciton because of spatial… read more here.
Keywords: exciton binding; donor acceptor; donor; polarization ... See more keywords
Sumanene Monolayer of Pure Carbon: A Two-Dimensional Kagome-Analogy Lattice with Desirable Band Gap, Ultrahigh Carrier Mobility, and Strong Exciton Binding Energy.
Sign Up to like & getrecommendations! Published in 2022 at "Small"
DOI: 10.1002/smll.202203274
Abstract: The design and synthesis of novel two-dimensional (2D) materials that possess robust structural stability and unusual physical properties may open up enormous opportunities for device and engineering applications. Herein, a 2D sumanene lattice that can… read more here.
Keywords: two dimensional; lattice; strong exciton; exciton binding ... See more keywords
Effect of fluorination on exciton binding energy and electronic coupling in small molecule acceptors for organic solar cells
Sign Up to like & getrecommendations! Published in 2020 at "Computational and Theoretical Chemistry"
DOI: 10.1016/j.comptc.2020.112797
Abstract: Abstract A detail study was performed to get deeper understanding of fluorination impact on intermolecular coupling and intermolecular interactions. Results showed that fluorine substitution plays an important role to modify the charge distribution or electrostatic… read more here.
Keywords: energy; fluorination; exciton binding; binding energy ... See more keywords
Optical properties and exciton binding energy and related parameters of CdTe: Pressure-induced effects
Sign Up to like & getrecommendations! Published in 2018 at "Optik"
DOI: 10.1016/j.ijleo.2018.05.069
Abstract: Abstract The present paper reports on the hydrostatic pressure dependence of the direct and indirect energy band-gaps, refractive index, static and high-frequency dielectric constants, exciton banding energy and exciton Bohr radius for CdTe in the… read more here.
Keywords: energy; optical properties; properties exciton; exciton binding ... See more keywords
Exciton binding energies in CdSe/MgSe quantum well structures
Sign Up to like & getrecommendations! Published in 2017 at "Superlattices and Microstructures"
DOI: 10.1016/j.spmi.2017.12.035
Abstract: Abstract Binding energies of heavy- and light-hole excitons in CdSe/MgSe quantum wells have been determined in terms of quantum well width. Hydrogenic wave functions are assumed to represent exciton wave functions. Contribution of the polarization… read more here.
Keywords: exciton; exciton binding; cdse mgse; binding energies ... See more keywords
Exciton Binding Energy in CdSe Nanoplatelets Measured by One- and Two-Photon Absorption
Sign Up to like & getrecommendations! Published in 2021 at "Nano Letters"
DOI: 10.1021/acs.nanolett.1c04159
Abstract: Colloidal semiconductor nanoplatelets exhibit strong quantum confinement for electrons and holes as well as excitons in one dimension, while their in-plane motion is free. Because of the large dielectric contrast between the semiconductor and its… read more here.
Keywords: exciton binding; two photon; cdse nanoplatelets; one two ... See more keywords
Determination of strain relaxation in InGaN/GaN nanowalls from quantum confinement and exciton binding energy dependent photoluminescence peak
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-26725-6
Abstract: GaN based nanostructures are being increasingly used to improve the performance of various devices including light emitting diodes and lasers. It is important to determine the strain relaxation in these structures for device design and… read more here.
Keywords: binding energy; strain relaxation; exciton binding;
Structure Dependence of Excitonic Effects in Chiral Graphene Nanoribbons
Sign Up to like & getrecommendations! Published in 2017 at "Chinese Physics Letters"
DOI: 10.1088/0256-307x/34/1/017102
Abstract: We explore the excitonic effects in chiral graphene nanoribbons (cGNRs), whose edges are composed alternatively of armchair-edged and zigzag-edged segments. For cGNRs dominated by armchair edges, their energy gaps and exciton energies decrease with increasing… read more here.
Keywords: graphene nanoribbons; excitonic effects; effects chiral; exciton binding ... See more keywords
Dielectric impact on exciton binding energy and quasiparticle bandgap in monolayer WS 2 and WSe 2
Sign Up to like & getrecommendations! Published in 2019 at "2D Materials"
DOI: 10.1088/2053-1583/ab072a
Abstract: Excitons, bound electron–hole pairs in a 2D plane, dominate the optical properties of monolayer transition metal dichalcogenides (TMDs). A large exciton binding energy on the order of 0.5 eV was theoretically predicted and experimentally determined… read more here.
Keywords: exciton; exciton binding; binding energy; energy quasiparticle ... See more keywords
Bethe-Salpeter equation approach with electron-phonon coupling for exciton binding energies
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.103.075201
Abstract: We introduce a simple scheme in order to account for the coupling with longitudinal phonons within the first-principles Bethe-Salpeter approach based on many-body perturbation theory. This allows one to evaluate the reduction of exciton binding… read more here.
Keywords: electron phonon; bethe salpeter; approach; binding energies ... See more keywords
Assessment of long-range-corrected exchange-correlation kernels for solids: Accurate exciton binding energies via an empirically scaled bootstrap kernel
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.205136
Abstract: In time-dependent density-functional theory, a family of exchange-correlation kernels, known as long-range-corrected (LRC) kernels, have shown promise in the calculation of excitonic effects in solids. We perform a systematic assessment of existing static LRC kernels… read more here.
Keywords: accurate exciton; range; exciton binding; bootstrap ... See more keywords