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- Title
Exciton dynamics: Electrons take an unexpected turn.
- Authors
Jaeger, Heather M.; Prezhdo, Oleg V.
- Abstract
The article presents the authors' insights on the photo-excitation of electrons to generate electrical potential and electricity in photovoltaic systems. They cite the study of Anthony Dutoi and Lorenz Cederbaum which shows that the traditional strong electron-hole interaction models in the dynamics of electron excitation may not be accurate in its representation. They say that theory of Dutoi and Cederbaum show that an excited electron avoids a positively charged ammonium group where the electron and hole trajectories are correlated that results in a minimal charge separation. They add that ultrafast electron-transfer dynamics can take place without an external potential, in which this charge separation is based on electronic coupling between electron donors and acceptors.
- Subjects
ELECTRONIC excitation; PHOTOELECTRICITY; ELECTROSTATICS; ELECTRICITY; PHOTOVOLTAIC power generation; DUTOI, Anthony; CEDERBAUM, Lorenz; EXCITON theory; ELECTRON-hole recombination; CHARGE exchange; ELECTRON donor-acceptor complexes
- Publication
Nature Chemistry, 2012, Vol 4, Issue 1, p8
- ISSN
1755-4330
- Publication type
Article
- DOI
10.1038/nchem.1225