Abstract
The Hamiltonian of the exciton in an ultrafine particle (UFP) with a dipole at its surface is given. The exciton energy is calculated as a function of the dielectric constant of the medium outside the UFP and the strength of the dipole. The results show that, for materials with small exciton reduced mass, the change of exciton binding energy caused by the dipole, up to a several meV is largely affected by the dielectric constant of the medium of the UFP, and that of the medium outside the UFP may change the exciton binding energy even more. These two factors shift the band edge of the absorption spectra toward the red end. (author). 18 refs, 6 figs, 4 tabs.
Zuyou, Lai;
[1]
Shiwei, Gu
[2]
- International Centre for Theoretical Physics, Trieste (Italy)
- CCAST World Lab., Beijing (China)
Citation Formats
Zuyou, Lai, and Shiwei, Gu.
Energy change of exciton in ultrafine particle due to a dipole at the surface of the particle.
IAEA: N. p.,
1991.
Web.
Zuyou, Lai, & Shiwei, Gu.
Energy change of exciton in ultrafine particle due to a dipole at the surface of the particle.
IAEA.
Zuyou, Lai, and Shiwei, Gu.
1991.
"Energy change of exciton in ultrafine particle due to a dipole at the surface of the particle."
IAEA.
@misc{etde_10132859,
title = {Energy change of exciton in ultrafine particle due to a dipole at the surface of the particle}
author = {Zuyou, Lai, and Shiwei, Gu}
abstractNote = {The Hamiltonian of the exciton in an ultrafine particle (UFP) with a dipole at its surface is given. The exciton energy is calculated as a function of the dielectric constant of the medium outside the UFP and the strength of the dipole. The results show that, for materials with small exciton reduced mass, the change of exciton binding energy caused by the dipole, up to a several meV is largely affected by the dielectric constant of the medium of the UFP, and that of the medium outside the UFP may change the exciton binding energy even more. These two factors shift the band edge of the absorption spectra toward the red end. (author). 18 refs, 6 figs, 4 tabs.}
place = {IAEA}
year = {1991}
month = {Sep}
}
title = {Energy change of exciton in ultrafine particle due to a dipole at the surface of the particle}
author = {Zuyou, Lai, and Shiwei, Gu}
abstractNote = {The Hamiltonian of the exciton in an ultrafine particle (UFP) with a dipole at its surface is given. The exciton energy is calculated as a function of the dielectric constant of the medium outside the UFP and the strength of the dipole. The results show that, for materials with small exciton reduced mass, the change of exciton binding energy caused by the dipole, up to a several meV is largely affected by the dielectric constant of the medium of the UFP, and that of the medium outside the UFP may change the exciton binding energy even more. These two factors shift the band edge of the absorption spectra toward the red end. (author). 18 refs, 6 figs, 4 tabs.}
place = {IAEA}
year = {1991}
month = {Sep}
}