By Jai Singh
ISBN-10: 1489909966
ISBN-13: 9781489909961
ISBN-10: 1489909982
ISBN-13: 9781489909985
Applying a unified quantum procedure, members supply clean insights into the theoretical advancements within the excitation power move techniques in condensed subject. This accomplished quantity examines Frenkel and Wannier excitonic techniques; charges of excitonic procedures; idea of laser sputter and polymer ablation; and polarons, excitonic polarons and self-trapping.
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Extra resources for Excitation Energy Transfer Processes in Condensed Matter: Theory and Applications
Sample text
In what follows, we will present a brief derivation of the Wannier exciton-phonon interaction energy operator linear in lattice displacement coordinates. The ionic potential V(r)=l:1 V. I5a). (Note that in a translationally symmetric crystal V. is the same for every 1). We assume that the instantaneous ionic coordinates XI can be written as XI = 1+ RI , where 1 is the ionic position coordinate at the lattice equilibrium and RI is the corresponding lattice displacement vector due to lattice vibrations.
4. Frenkel Excitons potential U such that they remain on their respective molecular sites but their excited states are exchanged after the scattering. One can also say that due to the exchange interaction matrix element, the excited electron in state f of molecule I recombines with the hole in the ground state g of the same molecule and the excess energy thus liberated is transferred to excite another electron-hole pair on a molecule at m. In this case, therefore, while the excited charge carriers remain at their respective sites the energy carried by them gets transferred to another molecule.
88). ,m"'. (S)Bf,m(S) } L: f,1,m7". 16) may be assumed to be zero, setting V/B},k(S) =0. This is justified in view of the fact that B},k(S) is independent of any particular lattice site.
Excitation Energy Transfer Processes in Condensed Matter: Theory and Applications by Jai Singh
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