Oligoacenes in their crystalline state are increasingly used in the field of electronics and photonics. Following a recent systematic theoretical study of the five smallest oligoacene molecules (naphthalene, anthracene, tetracene, pentacene, and hexacene), we evaluate their one- and two-particle properties (electron affinities, ionisation energies, quasiparticle correction to the highest occupied molecular orbital-lowest unoccupied molecular orbital gap, exciton binding energy, electronic absorption), using different exchange-correlation functionals in the framework of Density Functional Theory (DFT) and Time Dependent DFT. The hybrid functional B3LYP is found to yield the best agreement with the available experimental data.

Electronic excitations of oligoacenes: A time dependent density functional theory study

CAPPELLINI, GIANCARLO;MALLOCI, GIULIANO;
2009

Abstract

Oligoacenes in their crystalline state are increasingly used in the field of electronics and photonics. Following a recent systematic theoretical study of the five smallest oligoacene molecules (naphthalene, anthracene, tetracene, pentacene, and hexacene), we evaluate their one- and two-particle properties (electron affinities, ionisation energies, quasiparticle correction to the highest occupied molecular orbital-lowest unoccupied molecular orbital gap, exciton binding energy, electronic absorption), using different exchange-correlation functionals in the framework of Density Functional Theory (DFT) and Time Dependent DFT. The hybrid functional B3LYP is found to yield the best agreement with the available experimental data.
Electronic properties of clusters
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11584/20783
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