Determination of the electron transfer mechanism through decomposition of the density matrix

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We present a modified Feynman and Vernon's path integral formalism which allows independent consideration of coherent superexchange and incoherent hopping pathways of charge transfer processes in order to determine the type of transport mechanism. By classifying the pathways between donor and acceptor into different mechanisms and by decomposing the density matrix of donor-bridge-acceptor triads into corresponding partial matrices, the contribution of each mechanism is obtained separately. Numerical tests confirm that the scheme is valid and efficient in exploring the transport mechanism and that the incoherent hopping mechanism tends to govern charge transfer processes even in systems with high-energy bridge states.

Original languageEnglish
Pages (from-to)19093-19095
Number of pages3
JournalJournal of Physical Chemistry B
Volume108
Issue number50
DOIs
Publication statusPublished - 2004 Dec 16

Fingerprint

Charge transfer
electron transfer
Decomposition
decomposition
Electrons
charge transfer
classifying
formalism
matrices
energy

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

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Determination of the electron transfer mechanism through decomposition of the density matrix. / Sim, Eunji.

In: Journal of Physical Chemistry B, Vol. 108, No. 50, 16.12.2004, p. 19093-19095.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Determination of the electron transfer mechanism through decomposition of the density matrix

AU - Sim, Eunji

PY - 2004/12/16

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N2 - We present a modified Feynman and Vernon's path integral formalism which allows independent consideration of coherent superexchange and incoherent hopping pathways of charge transfer processes in order to determine the type of transport mechanism. By classifying the pathways between donor and acceptor into different mechanisms and by decomposing the density matrix of donor-bridge-acceptor triads into corresponding partial matrices, the contribution of each mechanism is obtained separately. Numerical tests confirm that the scheme is valid and efficient in exploring the transport mechanism and that the incoherent hopping mechanism tends to govern charge transfer processes even in systems with high-energy bridge states.

AB - We present a modified Feynman and Vernon's path integral formalism which allows independent consideration of coherent superexchange and incoherent hopping pathways of charge transfer processes in order to determine the type of transport mechanism. By classifying the pathways between donor and acceptor into different mechanisms and by decomposing the density matrix of donor-bridge-acceptor triads into corresponding partial matrices, the contribution of each mechanism is obtained separately. Numerical tests confirm that the scheme is valid and efficient in exploring the transport mechanism and that the incoherent hopping mechanism tends to govern charge transfer processes even in systems with high-energy bridge states.

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