Quantum dynamics of ultrafast photoinduced processes in organic semiconductors: exciton dissociation at polymer heterojunctions | Zendy

Burghardt Irene | Zendy; Bittner Eric R. | Zendy; Tamura Hiroyuki | Zendy

Premium

Quantum dynamics of ultrafast photoinduced processes in organic semiconductors: exciton dissociation at polymer heterojunctions

Author(s) -

Burghardt Irene,

Bittner Eric R.,

Tamura Hiroyuki

Publication year - 2007

Publication title -

pamm

Language(s) - English

Resource type - Journals

ISSN - 1617-7061

DOI - 10.1002/pamm.200700705

Subject(s) - exciton , dissociation (chemistry) , ultrashort pulse , phonon , quantum , heterojunction , semiconductor , quantum mechanics , polymer , physics , chemical physics , materials science , chemistry , nuclear magnetic resonance , laser

A molecular‐level, quantum‐dynamical analysis of phonon‐driven exciton dissociation in semiconducting polymers is presented, using a linear vibronic coupling model in conjunction with a recently developed hierarchical chain representation. Quantum‐dynamical simulations in 20‐30 dimensions are carried out using efficient multiconfigurational techniques. The decay of the exciton towards a charge‐separated state is shown to be an ultrafast, coherent process of pronounced non‐equilibrium character, which cannot be modeled by conventional kinetic equations. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research