Results 41 to 50 of about 811,445 (252)

Modeling of plasmonic properties of nanostructures for next generation solar cells and beyond

open access: yesAdvances in Physics: X, 2021
Plasmonic particles and nanostructures are widely used in photovoltaic and photonics. Surface plasmons were found to enhance different types of solar cells including plasmonic DSSCs, plasmonic solid semiconductor solar cells, plasmonic organic solar ...
Sergei Manzhos   +3 more
doaj   +1 more source

Time Dependent- Density Functional Theory calculations on frequency-dependent photophysical properties of 2, 3-diphenylcyclopropenone

open access: yesFountain Journal of Natural and Applied Sciences (FUJNAS), 2017
Time Dependent Density Functional Theory (TD-DFT/B3LYP/6-31G*) calculations have been performed on the optimized structure of 2, 3-diphenylcyclopropenone (DPCP) in the UV region of the spectra; giving energies, oscillator strength, dipole moment, µ and ...
N. O. Obi-Egbedi, M. D. Adeoye
doaj   +3 more sources

Minimal Optimized Effective Potentials for Density Functional Theory Studies on Excited-State Proton Dissociation

open access: yesMicromachines, 2021
Recently, a new method [P. Partovi-Azar and D. Sebastiani, J. Chem. Phys. 152, 064101 (2020)] was proposed to increase the efficiency of proton transfer energy calculations in density functional theory by using the T1 state with additional optimized ...
Pouya Partovi-Azar, Daniel Sebastiani
doaj   +1 more source

Non-Equilibrium Aspects of Fission Dynamics within the Time Dependent Density Functional Theory [PDF]

open access: yesEPJ Web of Conferences
We will cover briefly the time-dependent density functional theory approach, extended to include pairing correlations, to induced fission of 238U(n,f), 241,243Pu, and 238Np, and also results on scission neutrons and a number of very nontrivial aspects of
Bulgac Aurel   +3 more
doaj   +1 more source

Density-functional perturbation theory goes time-dependent

open access: yesAtti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2008
The scope of time-dependent density-functional theory (TDDFT) is limited to the lowest portion of the spectrum of rather small systems (a few tens of atoms at most).
Gebauer, Ralph   +2 more
doaj   +1 more source

Superadiabatic Forces via the Acceleration Gradient in Quantum Many-Body Dynamics

open access: yesMolecules, 2019
We apply the formally exact quantum power functional framework (J. Chem. Phys. 2015, 143, 174108) to a one-dimensional Hooke’s helium model atom. The physical dynamics are described on the one-body level beyond the density-based adiabatic approximation ...
Moritz Brütting   +3 more
doaj   +1 more source

Benchmark Study on Phosphorescence Energies of Anthraquinone Compounds: Comparison between TDDFT and UDFT

open access: yesMolecules, 2023
Phosphorescent material is widely used in light-emitting devices and in the monitoring of cell phenomena. Anthraquinone compounds (AQs), as important phosphorescent materials, have potential applications as emitters for highly efficient organic light ...
Yujie Guo, Lingyu Zhang, Zexing Qu
doaj   +1 more source

Excitation energies from time-dependent density-functional theory. [PDF]

open access: yesPhysical Review Letters, 1996
The role of the exchange-correlation potential and the exchange-correlation kernel in the calculation of excitation energies from time-dependent density functional theory is studied.
M. Petersilka, E. Gross, K. Burke
semanticscholar   +1 more source

Dissipative Time Dependent Density Functional Theory [PDF]

open access: yesInternational Journal of Theoretical Physics, 2009
The simplest density functional theory due to Thomas, Fermi, Dirac and Weizsacker is employed to describe the non-equilibrium thermodynamic evolution of an electron gas. The temperature effect is introduced via the Fermi-Dirac entropy, while the irreversible dynamics is described by a nonlinear diffusion equation.
openaire   +3 more sources

Proton-transfer dynamics in ionized water chains using real-time time-dependent density functional theory

open access: yesPhysical Review Research, 2020
In density functional–theoretic studies of photoionized water-based systems, the role of charge localization in proton-transfer dynamics is not well understood.
Vidushi Sharma, Marivi Fernández-Serra
doaj   +1 more source

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